Beranek Corp has $695,000 of assets (which equal total invested capital), and it uses no debt - it is financed only with common equity. The new CFO wants to employ enough debt to raise the total debt to total capital ratio to 40%, using the proceeds from borrowing to buy back common stock at its book value. How much must the firm borrow to achieve the target debt ratio? O a. $294,680 O b. $278,000 O c. $219,620 O d. $344,720 O e. $247,420