Whispering Pines Incorporated is all-equity-financed. The expected rate of return on the company's shares is 10.25%. a. What is the opportunity cost of capital for an average-risk Whispering Pines investment? Note: Enter your answer as a percent rounded to 2 decimal places. b. Suppose the company issues debt, repurchases shares, and moves to a 23% debt-to-value ratio (D/V=0.23). What will be the company's weighted-average cost of capital at the new capital structure? The borrowing rate is 5.75% and the tax rate is 21%. Note: Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places