Answer:
Step-by-step explanation:
I know you are not supposed to answer D, but it actually is a pretty good question to ask, perhaps of your teacher. Mathematically I don't really know what you should answer.
I don't think you should answer B. I'm certain this is an ethics question of some sort. What you are proposing with this answer is theft.
I don't think I'd buy the chips. My instincts would be to run out of the store.
I guess I'd pick C.