Question 21 4 pts Q21. Answer all the following questions. a. If a war destroys buildings and facilities, and kills people, the economy will move inside the PPF without a shift in the PPF. True or false? Briey explain your reasoning. (2pts) b. Suppose your college expenses for this year are as follows: tuition: $20,000, room and board: $7,000, books and other education supplies: $5,000. Furthermore, during this year, you cannot work at all, which means you have to give up your full-time salary of $30,000. What is the opportunity cost of going to college this year, assuming that your room and board expenses would be the same even if you did not go to college? Show all your work. (2pts)