Please help me solve this question.

Note: Round your answers for each question as instructed. But carry your unrounded values forward to the later parts of the question Iwhere required. Planet Express has issued a 30-year, 4.4% half-yearly bond eight years ago. The bond currently sells for 98.3% of its face value. The firm's tax rate is 30.0%. A] Using the above information only, find Planet Express's pre-tax cost of debt? \:'% per annum compounded annually (Round to two decimal places} Suppose the book value of the above Planet Express coupon bond issue is $100.0 milh'on. In addition, the company has a second debt issue, a zero-coupon bond with eight years left to maturity; the book value of this issue is $53.0 million, and it sells for 54.4% of par. B] Find the yield on Planet Express's zero-coupon bond as an EAR. \:'% (Round to two decimal places) C) Given all of the above information, what is the overall pre-tax cost of debt for Planet Express now? \:'% (Round to two decimal places) Assume that Planet Express has common equity 'with a cost of 143% per annum and a market value of $105 _ million- In addition, assume that they have a preference share issue with a cost of10,2% per annum and that trades for a market value of$21_ million- DJ Find the WACC for Planet Express (assuming they operate under a classical taxation system). \:'% (Round to two decimal places)