Which Statement Accurately Describes Food with Regard to Energy

Which statement accurately describes food with regard to energy?

A) A calorie is the amount of energy required to raise 1 gram of water by 1°C.
B) Food calories are written as calories.
C) A calorie is a unit of energy used in the food industry only.
D) A calorie is the amount of energy required to raise 1 gram of water by 1°C and a food Calorie is equal to 1,000 calories.
E) A food Calorie is equal to 1,000 calories.