A COMPANY HAS A TARGET CAPITAL OF 50% Equity,30% preference and 20% debt. the first 20m equity will cost 15% and any addition equity will cost18%.the first 10m bonds will cost 12% and any additional bond will cost 16%. cost of prefernce is 10%

a) the initial WACC IS

B)at what capital structure size will the first 20m of equity will be exhausted

c)whats the MCC immediately after point (b) above