Which of the following bonds experience the greatest level of price change if the market interest rate increases by 1%?

10-year 5.5% coupon bond selling at discount.

10-year 5.5% coupon bond selling at premium.

9-year 5.5% coupon bond selling at par.

10-year 5.5% coupon bond selling at par.

9-year 6% coupon bond selling at par.