Amanda went on a crash diet in order to look terrific for a friend's wedding. She consumed only 800 calories per day compared to the 3,000 calories per day she normally consumed. After the wedding, she found that she rapidly passed up her original weight by ten pounds, even though she was eating 2,500 calories per day instead of her original 3,000. What's going on here? a. Amanda must be cheating. There is no way this could happen if she ate 2,500 calories per day. b. Amanda's metabolism must have slowed down too much because of her dramatic restriction of calories. c. Everybody gets larger when they get older. d. Amanda must have reduced her activity level substantially