Todd is having a sleepover on Friday and invites Henry. He tells Henry that his parents are going to be out of town and they are going to smoke some marijuana. Which of the following responses would be the most effective way for Henry to refuse.

A.) Um... I’m not sure.
B.) Are you stupid? No way!
C.) Hey, did you study for the biology test tomorrow?
D.) No thanks, I don’t want to. I’ll see you at the dance Saturday.