Assume that all interest rates in the economy decline from $10$ percent to $9$ percent.

Which of the following bonds will have the largest percentage increase in price?

A$)$ A $4-$year bond with a $24$ percent coupon rate.

B$)$ An $8-$year bond with a $12$ percent coupon rate.

C$)$ An $8-$year zero coupon bond.

D$)$ A $12-$year bond with a $8$ percent coupon rate.

E$)$ A $12-$year zero coupon bond.