Which of the Following Statements Concerning Protein Metabolism and Exercise

Which of the following statements concerning protein metabolism and exercise is NOT true?

A) Weight training promotes synthesis of the contractile muscle proteins
B) The effect of training in producing a positive protein balance during the recovery period depends on
An adequate supply of protein and Calories
C) Aerobic exercise stimulates synthesis of oxidative and mitochondria enzymes
D) After exercise, protein balance is at the very most maintained, but is usually negative