Problem 2 Oliver has determined his wage schooling locus below: Years of Schooling Annual Earnings 8 $10,000 9 $12,800 10 $15,000 11 $18,500 12 $20,350 13 $22,000 14 $23,100 15 $23,900 16 $24,000 Oliver has received a full-ride scholarship, so we assume there is no schooling cost (only the oppor- tunity cost of not working). Finally, let's assume his life is innitely long. (a) What is Oliver's marginal rate of return schedule? (b) Let's assume Oliver determined his discount rate is 4%. If that is true, when will he choose to quit school? (c) Now, let's assume a new tax rate has been implemented on income (20%). If that is true, when will he choose to quit school now? ((1) Why is it hard to truly estimate returns to schooling in this case