Hi. Please help me how to solve this and show the calculation. Urgent! Thanks!

QUESTION 3 (20 marks) Debt: A firm can sell 15,00025 -year bonds at 108% of par value. The semi -annual coupon rate is 5.8% Preference shares: A firm can issue 35,000 preference shares at a par value of RM100 per share. The firm will pays an annual dividend of 2.8% of par value. The current price of the preference shares is RM. Ordinary shares: There are 575,000 units of shares sold at RM64 per share. If beta =1.09, market risk premium =7%, risk -free rate =3.2%, and company tax rate =21%, calculate: (a) Cost of debt (4 marks) (b) Cost of preference shares (4 marks) (c) Cost of ordinary shares (4 marks) ) WACC (8 marks)