Cost of debt. Dunder$-$Mifflin, Inc. $($DMI$)$is selling $600,000$bonds to raise money for the publication of new magazines in the coming year. The bond will pay a coupon rate of $10\mathrm{.}1\%$with semiannual

payments and will mature in $30$years$.$ Its par value is $$100.$What is the cost of debt to DMI if the bonds raise the following amounts $($ignoring issuing costs$)?$

a$.$$$58,404,000$

b$.$$$55,830,000$

c$.$$$62,814,000$

d$.$$$76,674,000$

a$.$What is the cost of debt to DMI if the bonds raise $$58,404,000?$

b$.$What is the cost of debt to DMI if the bonds raise $$55,830,000?$

c$.$What is the cost of debt to DMI if the bonds raise $$62,814,000?$

d$.$What is the cost of debt to DMI if the bonds raise $$76,674,000?\%($Round to two decimal places.$)$