Which of the Following Statements Concerning the Caloric Concept of Weight

Which of the following statements concerning the caloric concept of weight control is false?

A) The First Law of Thermodynamics is the physical basis for body-weight control
B) Changes in the different components that comprise the total body weight may bring about body-weight fluctuations that appear contrary to the caloric concept
C) Genetic differences between individuals is the only cause for the difference in weight between two people who have consumed the same amount of Calories
D) It takes more energy to convert dietary carbohydrates and protein into body fat than it does to convert dietary fat into body fat