Which of the Following Bonds Will Be Most Sensitive to a Change

Which of the following bonds will be most sensitive to a change in interest rates?

A) a 15-year bond with a $5000 face value whose yield to maturity is 7.4% and coupon rate is 6.2% APR paid annually
B) a ten-year bond with a $2000 face value whose yield to maturity is 5.8% and coupon rate is 5.8% APR paid semiannually
C) a 30-year bond with a $1000 face value whose yield to maturity is 5.5% and coupon rate is 6.4% APR paid annually
D) a 20-year bond with a $3000 face value whose yield to maturity is 6.0% and coupon rate is 5.4% APR paid semiannually