General Forge and Foundry Corporation currently has no debt in its capital structure, but it is considering adding some debt and reducing the percentage of outstanding equity in its capital structure. The firm's current (unlevered) beta is 1.05, and its cost of equity is 11.93. Because the firm has no debt in its capital structure, its weighted average cost of capital (WACC) also equals 11.93. The risk-free rate of interest (rRFrRF) is 3%, and the market risk premium (RPMRPM) is 8.5%. General Forge's marginal tax rate is 30%.

General Forge is examining how different levels of debt will affect its costs of debt and equity, as well as its WACC. The firm has collected the financial information that follows to analyze its WACC. Complete the following table.

D/A Ratio	E/A Ratio	D/E Ratio	Bond Rating	Before-Tax Cost of Debt	Levered Beta (b)	Cost of Equity (rsrs)	WACC
0.0	1.0	0.00			1.05	11.93%	11.93%
0.2	0.8	0.25	A	7.20%		13.46%	11.78%
0.4	0.6	0.67	BBB	7.70%	1.54	16.09%
0.6	0.4	1.50	BB	8.90%	2.15		12.25%
0.8	0.2		C	11.90%	3.99	36.92%