12. Problem 5.24 (Present Value for Various Discounting Periods) Find the present value of $300 due in the future under each of these conditions: a. 6% nominal rate, semiannual compounding, discounted back 7 years. Do not round intermediate calculations. Round your answer to the nearest cent. 5 b. 6% nominal rate, quarterly compounding, discounted back 7 years. Do not roun intermediate calculations. Round your answer to the nearest cent. 5 c. 6\% nominal rate, monthly compounding, discounted back 1 year. Do not round intermediate calculations. Round your answer to the nearest cent. d. Why do the differences in the PVs occur