In early 2019, the market values of ABCs common stock, preferred stock, and debt were $ 50,111 million, $7,431 million, and $19,999 million, respectively. Given the costs of common stock, preferred stock, and debt we have already computed, ABCs WACC in early 2019 was" ?

Cost of Equity 4.99%

Cost of Preferred Stock 3.97%

Cost of Debt, after tax 2.21%