A 15-year Bond with a face value of $1000 is issued on 30 August 2021. It pays annual coupons with a coupon rate of 6% and has a yield to maturity of 3.5% at issuance. 1 year later, right after the coupon is paid out, the yield to maturity is 3.0%. What is the total rate of return on the bond for an investor who bought it on 30 August 2021, held it for a year, and sold right after the first coupon was paid out?(round to 1 decimal point) O a. 7.5% b. 8.6% O c. 2.5% O d. -5.2%