What is the firm's cost of capital (WACC) for each of the debt levels, 30 and 50 respectively? D/A-30D/A - 50 A) 11.50% 12.50% B) 11.28% 12.00% C) 11.10% 11.04% D) 11.04% 11.28% E) 11.10% 11.10% What is the firm's cost of capital (WACC) for each of the debt levels, 30 and 50 respectively? D/A-30D/A - 50 A) 11.50% 12.50% B) 11.28% 12.00% C) 11.10% 11.04% D) 11.04% 11.28% E) 11.10% 11.10%