Harry enjoys tennis but wants a high grade in his economics course. Figure 1 shows Harry's PPF. Figure 2 shows Harry's marginal benefit curve from tennis. Harry would be off getting a higher grade in economics because If Harry uses his time to achieve allocation efficiency, he plays | | hours of tennis a week and his economics grade is percent. O A. worse; his marginal cost of tennis would exceed his marginal benefit O B. worse; his marginal benefit from tennis would exceed his marginal cost O C. better; it would raise his GPA O D. better; then he could play more tennis Figure 1 Figure 2 Grade in economics (percent) Willingness to pay (percentage points per I 90- 12- 10-..... ..... 75-.... .4. 8- ..... `MB RPF of of..... 0 2 6 8 10 12 8 10 12 Tennis (hours per week) Tennis (hours per week)