3. value: 10.00 points Compute the present value of interest tax shields generated by these three debt issues. Consider corporate taxes only. The marginal tax rate is Tc = .34. a. A $2,300, one-year loan at 10%. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Present value $ b. A four-year loan of $2,300 at 10%. Assume no principal is repaid until maturity. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Present value $ c. A $2,300 perpetuity at 9%. Present value $