Which of the Following Statements Best Describes the Concept of Fat

Which of the following statements best describes the concept of fat adaptation?

A) Increased consumption of fat over time will allow the body to increase the amount of energy it can produce from each gram of fat consumed.
B) Training the body to rely more heavily on fat as a fuel source will result in glycogen sparing, allowing an athlete to maintain long-distance activities for a longer period of time at a higher intensity.
C) Increased consumption of essential fatty acids will allow the body to shift the ratio of brown fat to white fat, resulting in increased caloric expenditure.
D) Training at higher altitudes will allow an athlete's fat stores to be shifted from white fat to brown fat.