Dunder-Mifflin, Inc. (DMI) is selling 600,000 bonds to raise money for the publication of new magazines in the coming year. The bonds will pay a coupon rate of 15.4% with semiannual payments and will mature in 30 years. Its par value is $100. DMI hires an investment banker for the sale of the 600,000 bonds. The investment banker charges a fee of 3% on each bond sold. What is the cost of debt to DMI if the following are the proceeds before the banker's fees are deducted? round to two decimals

a.$45,708,000

b.$57,042,000

c.$71,316,000

d.$73,176,000

please help for these, i keep gettinh them wrong :(