Which of the Following Is a Feature of Energy Metabolism

Which of the following is a feature of energy metabolism in formerly obese people who have lost weight?

A) Their basal metabolic rates are higher after weight loss than during the obese state
B) Energy expenditure is the same as in people who were never obese
C) Energy requirements are lower than expected for their current body weight
D) Energy expenditure is the same per kg body weight as compared with the obese state