Which one of the following 15 -year bonds with a maturity value of $3,000,000 would generate the highest proceeds upon issuance? Select one: a. A bond with a coupon interest rate of 6% and an effective or yield rate of 6%. b. A bond with a coupon interest rate of 7% and an effective or yield rate of 9%. c. A bond with a coupon interest rate of 9% and an effective or yield rate of 7%. d. A bond with a coupon interest rate of 8% and a effective or yield rate of 8%