Calculate the weighted average cost of capital for the following firm: it has $600000 in debt, $500000 in common stock and $100000 in preferred stock. It has a 4% cost of debt, 14% cost of common stock, 11% cost of preferred stock and a 32% tax rate.

		A) 8.11%
		B) 6.35%
		C) 7.58%
		D) 10.10%