Suppose you just bought an annuity with 13 annual payments of $10,000 per year at a discount rate of 10 percent per year. a. What is the value of your annuity today? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. What happens to the value of your investment if the discount rates suddenly drop to 5 percent? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) c. What if the discount rates suddenly rise to 15 percent? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) a. Present value at 10 percent b. Present value at 5 percent c. Present value at 15 percent