Question 6: The PPF below shows Harry's choices between studying economics and playing tennis per week. Use the graph and the concepts such as scarcity, choices, efficiency, and trade off, as presented by PPF, in answering the following questions. (8 points) Assume Harry has set aside 10 hours each week for when he can either spend playing tennis and/or studying economics. (Note: It takes 2 hours of studying to increase grade by 10%, from 40% to 50%, 50% to 60%, and 60% to 70%; total of 6 hours It takes 2 hours of studying to raise grade from 70% to 75%, and 75% to 80%, total of 4 hours. This adds up to the 10 hours Harry has set aside to either play tennis or study). FIGURE 2-2 Problem 70 Harry's PPF Grade in economics (percent 60 SO 40 10 Tennis [hours per week! a. Explain what a point like g inside the PPF means. (2 points) b. Explain the movement from point g to point d. (2 points) c. Explain the movement from point d to point e? (2 points) d. Is Harry's choice at point "f" an efficient one? explain. (2 points)