Which of the Following Describes the Role of Protein as a Fuel

Which of the following describes the role of protein as a fuel during physical activity?

A) Protein is not a major fuel for physical activity.
B) Protein contributes 30% percent less to total fuel used for physical activity than during rest
C) Protein contributes 30% percent more to total fuel used for physical activity than during rest.
D) Body protein is the dominant fuel for resistance activity but not for endurance activity.