Here's a short story: There's only one slice of cake left, and both Mary and her friend Amy want it! However, Mary's little sister has betrayed her, and is trying to sabotage Mary by clinging to her leg. It takes Mary longer to get going to reach the cake because (A) she's heavier than Amy with her sister on her leg (B) she's lighter than Amy with her sister on her leg. What is the most sensical answer between "Mary" and "Amy"?
Answer:
Mary