14. You manage a bond portfolio and believe that market interest rates are going lower over the next several months. To profit from your belief, you should: (1 Point) I Reduce the average maturity of the portfolio by selling long-term bonds and buying short-term bonds. II. Lengthen the average maturity of the portfolio by buying long-term bonds and selling short-term bonds. III. Reduce the average coupon rate by selling high-coupon bonds and buying low- coupon or zero coupon bonds. IV. Increase the average coupon rate by buying high-coupon bonds and selling low- coupon bonds. A) I only B) I and II only C) II and III only D) I and IV only