Your Roommate Tells You He Wants to Put on More

Your roommate tells you he wants to put on more muscle mass.He plans to do this by adding in strength-training exercises and protein shakes to his diet.What advice could you offer him?

A) Higher amounts of protein will add muscle mass faster,so add in as much as you possibly can.
B) Going over 0.8 g/kg will have no benefit for muscle building during the training period.
C) Intakes of up to 1.7 g/kg is acceptable during muscle mass gain,but going over this amount can lead to dehydration and insufficient carbohydrate intake.
D) Try to stay as low as possible in your intake as proteins have no benefit for muscle mass gain or energy usage.