If a 1-year bond and a 15-year bond have the same coupon rate, which of the following statements is true? Select one:

a. Neither a 1-year bond nor a 15-year bond has any interest rate risk.

b. A 1-year bond has less interest rate risk than a 15-year bond.

c. A 1-year bond has the same interest rate risk as a 15-year bond.

d. A 1-year bond has more interest rate risk than a 15-year bond.