You're 17. At a small gathering at your friend's older cousi...

Prompt

You're 17. At a small gathering at your friend's older cousin's house, your friend Alex quietly passes you a sealed manila envelope and says: "Don't open it, just keep it for me till Monday. Don't tell anyone, keep it safe." You put it in your backpack. Monday comes. You meet up with Alex and he tells you to keep it as "a gift". the next day at the end of school as you've left the school premises, a person in plain clothes with a business card stops you. He shows you a photo of Alex, and asks if you know him, you nod and then asks if you've been given anything unusual. He is calm, polite, doesn't accuse you of anything. He seems to be in his mid 30s. You have not opened the envelope. You remember your bag contains a pencil case, a letter from your friend about an invite to a karoeke place(no name written on it), your notebook, an anime plushie and the manila envelope. What do you do? A: walk away B: confront him C: Lie D: Give him the envelope E: Give him something else F: Call someone G: Run away