Which of the following statements is true of the calorific value of fats compared with that of carbohydrates?

A) The burning of both fatsand carbohydrates produces about 4 kcal/g of energy.
B) The burning of both fatsand carbohydrates produces about 9 kcal/g of energy.
C) The burning of carbohydrates produces about 4 kcal/g, whereasthe burning of fatsproduces about 9 kcal/g of energy.
D) The burning of carbohydrates produces about 9 kcal/g, whereas the burning of fats produces about 4 kcal/g of energy.