MAO Corporation has 500,000 preference shares trading at $3 each. MAO Corporation has 11 million ordinary shares outstanding that are currently priced at $7 each and have a beta of 1.05. The market yield on the preference shares is 6.70% per annum. The market risk premium is 12.5% p.a., the risk-free rate is 2.5% p.a., and the company tax rate is 30%. The company's bonds have a total market value of $9,000,000, have a coupon rate of 2% p.a. and current yield to maturity is 4% per annum.

What is MAO Corporations WACC?