Please answer ALL sections. I need the answer for PART C, as you can see the X means I got it wrong. SO please help me figure out the First YEAR deduction.

Edison Corporation needs to raise funds to finance a plant expansion and has decided to issue 20-year zero coupon bonds to raise the money. The required return on the bonds will be 7 percent. Assume a par value of $1,000 and semiannual compounding. a. What will these bonds sell for at issuance? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. Using the IRS amortization rule, what interest deduction can the company take on these bonds in the first year? In the last year? (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) c. Using the straight-line method, what interest deduction can the company take on these bonds in the first year? In the last year?. (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) X Answer is complete but not entirely correct. a. $ 252.57 b. 17.99 Price when issued First year deduction Last year deduction First year deduction Last year deduction $ 66.49 c. $ 747.43 X 37.37