Namib Sand Company expects a PBIT of R9 000 000 every year forever and currently has no debt financing on its capital structure. The cost of equity is 17% on its 3 000 000 outstanding shares and if the company decides to borrow, it can do so at 10%. The company has a tax rate of 35%. (a) What is the value of the unlevered firm? (b) If the company decides to change its all-equity capital structure to 50% debt, what is the value of the firm? (c) What will the value of the company be if Namib Sand Company converts its all equity-capital structure to 100% debt? (d) Based on the Miller and Modiglianis Case II propositions and with the aid of a graph, explain why the answers in a, b and c are different.