XYZ is building a new office complex. The total cost is $15,000,000. XYZ can borrow money up to $6,000,000 at an after tax cost of debt of 7%. They can borrow beyond $6,000,000 but the after tax cost of debt increases to 9%. They have $20,000,000 in Retained Earnings available at a cost of 12% They can sell new common stock at a cost of 16%. Assume they can sell as much common stock as needed. The TCS is 50% debt; 50% common equity. Questions: Where will XYZ's MCC have a break point? What form of funds (debt, retained earnings, new common stock) did they run out of? I