The firm's EBIT (earnings before interest and taxes) is $5 million. The interest rate for its debt is 8%, and its tax rate is 20%. a. If the firm uses $100 million in equity to finance its asset (i.e., debt =0 ), what are the firm's ROA (return on asset) and ROE (return on equity)? (10 marks) b. If the firm uses $50 million of debt and $50 million of equity to finance its asset, what are the firm's ROA and ROE? (10 marks)