Margaret's Parents Are Both Obese

Margaret's parents are both obese. She has dieted six times, each time losing a considerable amount of weight and subsequently regaining it. Margaret has an aversion to exercise. Which of the following is true about Margaret's situation?

A) Her frequent weight loss attempts have most likely led to greater amounts of lean body mass.
B) Her problem is genetic and there is no reason for her to attempt to lose weight.
C) When she ends the diet she regains additional body fat.
D) Her problem results from poor habits, with studies showing genetics as an insignificant contributor.