6. Which of the following bonds will have the largest price change if the interest rate changes by 1 basis point? a. A 10 year annual pay coupon bond with coupon rate 5% and YTM=8% b. A 10 year annual pay coupon bond with coupon rate 6% and YTM = 8% c. A 10 year annual pay coupon bond with coupon rate 5% and YTM=9% d. An 8 year annual pay coupon bond with coupon rate 5% and YTM = 8%