To Promote Gains in Muscle Mass,a Strength-Trained Athlete Could Consume

To promote gains in muscle mass,a strength-trained athlete could consume _____ within the first 1 or 2 hours after a weight-lifting workout.

A) 1 bag of microwave popcorn.
B) 2 cups of plain yogurt with 1 cup of fresh blueberries.
C) 1 large bagel with 2 tablespoons of cream cheese.
D) 4 ounces of sirloin steak.