What is the present value of a perpetuity with quarterly payment of $500 and annual interest rate of 10%? Hint: Present value of a perpetuity can be calculated as: PV - CF / r, where "r" is the periodic rate, and "CF" is the periodic payment with the same frequency of "r." a) $15,000 b) $10,000 Oc) $22,000 d) $5,000 e) $20,000