a) determine the yield to maturity for discount bond selling for selling N$15000 that has a face value of N$20000 in one year. B) determine the interest rate of a perpetuity with a price of N$500 and an annual interest payment of N$25. C) what is the return on a 5 percent coupon bond that initially sells for N$1000 and sells for N$1200 next year? D) your uncle advises you to purchase long-term bonds because their interest rate is 15%. Should you follow his advice