Find the complete optimal solution to this linear programming problem. 
Definitions:
Calculate
The act of determining a value or amount by mathematical means, often to analyze financial or statistical data.
Borrowed
The act of receiving something, especially money, with the obligation to return it or its equivalent.
Retained Earnings
The portion of a company's profit that is held or retained and saved for future use, investment, or to pay debt, rather than being paid out as dividends to shareholders.
MCC
Stands for Marginal Cost of Capital, which is the cost of obtaining one additional dollar of new capital, used in financial analysis to determine the optimal capital structure.
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