A Student Athlete Is Deciding Whether to Work Out for an Extra

Multiple Choice

A student athlete is deciding whether to work out for an extra hour. Her marginal benefit from another hour of exercise

A) is the benefit she gets from all the hours she's worked out all week.
B) is the benefit she receives from exercising the additional hour.
C) is less than the marginal cost of the additional hour.
D) depends on the cost of the workout.