Answer:
e. Minimize the weighted average cost of capital (WACC)
Step-by-step explanation:
A: Earnings per share is linked to the stockholders' only, therefore, it cannot achieve the target capital structure. It is a wrong statement.
B: Minimizing the cost of equity is related to the equity only, so, it is also a false statement.
C: Cost of debt is only related to liabilities. It cannot minimize the total target capital structure. Therefore, it cannot be an answer.
D: It is out of question because target capital structure cannot obtain the bond rating.
E: Since weighted average cost of capital is the combination of debt and equity capital's cost, it can be minimized with the firm's target capital structure.