ABC has the following market value capital structure, shown below, which is considered to be optimal. The firm has no preferred stock. Debt $$400,000$ Equity $$600,000$ New bonds currently have a $10\%$ coupon rate and ABC's stock sells for $$20$ per share. The expected growth rate in dividends is $8$ percent. The corporate tax rate is $40$ percent and the firm net income was $$5$ million. Finally, the firm paid $20\%$ of its earning out as dividends. a$.$ What is the firm cost of capital? $(12$ pts$)$ b$.$ If the flotation cost is $10\%,$ what is the new cost of capital? $(6$ pts$)$