Compute the present value of interest tax shields generated by these three debt issues. Consider corporate taxes only. Assume that the marginal tax rate is Tc $=0\mathrm{.}34.$

a$.$ A $$2,700,$ one$-$year loan at $9\%.($Do not round intermediate calculations. Round your answer to $2$ decimal places.$)$

b$.$ A seven$-$year loan of $$2,700$ at $9\%.$ Assume no principal is repaid until maturity. $($Do not round intermediate calculations. Round your answer to $2$ decimal places.$)$

c$.$ A $$2,700$ perpetuity at $8\%.$

$($I just Need B$,$C$)$