Firm A plans to acquire firm B. The cost of equity for firm A is 10.5%. Firm A is financed by 60% equity and 40% debt, and this leverage will remain unchanged after the acquistion. Firm A pays interest of 8% on its debt, which will also remain unchanged after the acquisition. What is firm A's WACC? 12.50% 10.50% 9.50% 8.50% 11.50%