Which bond is more sensitive to an interest rate change of $0\mathrm{.}75$ percent?

Bond A: yield to maturity $=\mathrm{.}00\%,$ maturity $=8$ years, coupon rate $=6\%,$ face value $=$ $$1,000$Bond B: yield to maturity $=3\mathrm{.}50\%,$ maturity $=5$ years, coupon rate $=7\%,$ face value $=$ $$1,000$