Which of the following statements is NOT CORRECT?

a. When a bond's coupon interest rate is less than the market interest rate, the bond will sell at a value less than its par value and is known as a discount bond.

b. Bonds are basically loans, so they usually make regular interest payments to the bondholders. The percentage of this interest payment relative to the bond's face value is called the coupon interest rate.

c. For a fixed-rate bond, the coupon interest rate is set for the life of the bond. Unlike a fixed-rate bond's coupon interest rate, the market interest rate changes throughout the life of the bond and has a huge impact on the bond's price.

d. When the market interest rate is higher than the coupon interest rate, the bond price rises above the par value and is called a premium bond.

e. When a bond's coupon rate is equal to the market interest rate, the bond will sell for its face value, or what is known as selling at par.