Calculate the gain or loss on the sale of six $5000. 9.5% bonds with interest payable semi-annually redeemable at par bought twenty-one years before maturity to yield 10.5% compounded semi- annually. The bonds were sold three years later at 103.625. Select one: a. $1461.71 Gain b. $3491.81 Gain c. $11420.82 Loss O d. $3491.81 Loss