5. What is the prices of a preferred stock that has a required return of 7%, finite life of 50 years, a $100 par value, and a $15 annual dividend. If the par value is repaid at maturity in 50 years, what is the price of the stock? 5. a. What would be its value if the required return declined to 6% ? 5. b. What would the stock price be if this was perpetual preferred with a required return of 6%