Which of the following will increase the price of a bond, all else constant? 4 15. 15 16 17) 18 19 20 21 22 I. II. III. IV. decreasing the time to maturity of a zero coupon bond increasing the coupon rate decreasing the market rate of return increasing the yield to maturity A) I and II only B) I and IV only C) II and III only D) 1, II, and III only E) I, II, and IV only