17. Boeing Company (NYSE:BA) has a current stock price of $49.86. It also has a P/B of 3.57 and a book value per share of $13.97. Assume that the single-stage growth model is appropriate for valuing the company. Boeing's beta is .80, the risk-free rate is 5 percent, and the equity risk premium is 5.5 percent.

A. If the growth rate is 6 percent and the ROE is 20 percent, what is the justified P/B for Boeing?

B. If the growth rate is 6 percent, what ROE is required to yield Boeing's current P/B?

C. If the ROE is 20 percent, what growth rate is required for Boeing to have its current P/B?