Ergotone Audio had a degree of accounting operating leverage equal to 1.60 during the most recent period. If the firm's EBITDA was $3,000 and its cash fixed costs were equal to $1,250, what was Ergotone 's depreciation and amortization expense during the same period? (Round the final answer to the nearest whole dollar.) HINT: Degree of pretax cash flow operating leverage = 1 + FC/ EBITDA Degree of accounting operating leverage = 1 + FC+D&A / EBITDA - D&A (A)$404 (B)$507 (C)$377 (D)$344