What Is the Rationale for the Fat Cell Theory of Obesity

What is the rationale for the fat cell theory of obesity?

A) Fat cell number increases dramatically after puberty.
B) Fat cell number in an adult can decrease only by fasting.
C) Fat cell number increases most readily in late childhood and early puberty.
D) Weight gain from overeating in adults takes place primarily by increasing the number of fat cells.
E) Weight loss in adolescents and adults occurs when fat cells are lysed and their numbers decrease.