Calculate the following (assume all payments are made at the end of the year) a. What is the value today of a $10,000 payment made in perpetuity assuming a 8% discount rate? b. Assume the same perpetuity as above but the payments will not begin for another five years. What is the present value of such a perpetuity? c. What is the present value of a 5 year annuity which pays $10,000 per year and with an interest rate of 8%? D. You are told you will receive the following cash payments at the end of the next three years: Year 1: $10,000 Year 2: $25,000 Year 3: $50,000 Assuming a discount rate of 12%, what is present value of all payments