1 pts Question 12 Which of the following statement is incorrect? As interest rates fall, the prices of bonds increase. U.S. Treasury securities are the best proxy measure for the risk-free rate. Bonds that sell at prices below par are called premium bonds. Whenever a bond's coupon rate is lower than the market rate of interest on similar bonds, the bond will sell at a discount, and such bonds are called discount bonds. Most of the answers are correct except one