Please explain why answer C is correct:

17. Consider two bonds, A and B. Both bonds presently are selling at their par value of $1,000. Each pays interest of $120 annually. Bond A will mature in 5 years while bond B will mature in 6 years. If the yields to maturity on the two bonds change from 12% to 10%, ______.

A) both bonds will increase in value but bond A will increase more than bond B

B) both bonds will decrease in value but bond B will decrease more than bond A

C) both bonds will increase in value but bond B will increase more than bond A

D) both bonds will decrease in value but bond A will decrease more than bond B