IQ test (matrix style)

Prompt

PUZZLE: 3×3 matrix, bottom-right cell missing. Pick the answer (a–e, g) that completes it. Grid is read top-to-bottom, left-to-right. Coordinates are relative (0–100 = cell width/height, x=left→right, y=top→bottom). Cell (1,1): A large square outline, roughly (25,20)-(68,78). A smaller square, roughly (55,10)-(72,26), overlaps its top-right corner. Cell (1,2): A short floating horizontal line (20,55)-(38,55), not touching anything. Separately, an open bracket: horizontal (20,78)-(65,78) with a vertical tick rising from its right end (65,55)-(65,78). Cell (1,3): A "T" shape: horizontal line (18,25)-(78,25), a vertical stem down from its center (48,25)-(48,80), and a short vertical tick down from its right end (78,25)-(78,42). Cell (2,1): A vertical line (22,22)-(22,68) meeting a horizontal (22,68)-(48,68), forming an "L". A small closed square, roughly (48,45)-(68,68), sits attached to the right of the L's base. Cell (2,2): Two vertical lines — (20,50)-(20,70) and (38,50)-(38,70) — connected by one horizontal line across the top that extends further right: (20,50)-(75,50). (Looks like "Π" with an extended arm.) Cell (2,3): A dashed vertical line, floating separately, (48,15)-(48,55). Below/right of it, a solid connected shape: horizontal (18,72)-(48,72), rising diagonal (48,72)-(75,45), and a short vertical tick (75,32)-(75,45). Cell (3,1): A staircase path: horizontal (20,22)-(55,22), down (55,22)-(55,50), left (32,50)-(55,50), down (32,50)-(32,75). Separately (detached), a small corner bracket: horizontal (58,78)-(68,78) with vertical (68,62)-(68,78). Cell (3,2): A "U" bracket: vertical (18,50)-(18,68), horizontal (18,68)-(38,68), vertical (38,50)-(38,68). Separately (detached), a single vertical line (68,50)-(68,68). Cell (3,3): MISSING — solve for this. Answer options: a) Extra outer rectangle frame around everything. Inside: dashed horizontal line touching a solid vertical, which connects to a diagonal, forming a triangle at bottom-right. b) A tall solid vertical line connected at its base to a right triangle (diagonal + horizontal base). Separately, a short dashed horizontal segment floats near the bottom-left, not touching. c) A solid right triangle (vertical + diagonal + horizontal, closed) on the left. Separately, top-right, a bracket that's part solid (horizontal) and part dashed (vertical). d) A solid vertical line on the left, connected via a dashed horizontal segment to a right triangle (diagonal + base) on the right — all in one row along the bottom. e) A solid "L" (vertical + horizontal) on the left, joined to a triangle (extra vertical + diagonal) sharing the same baseline. Separately, a dashed vertical line floats at the top-right, not touching. g) A dashed vertical line at top-left, descending to directly touch the bottom-left vertex of a solid right triangle (diagonal + horizontal base).