Brown Office Supplies recently reported $19,000 of sales, $8,250 of operating costs other than depreciation, and $1,750 of depreciation. It had $9,000 of bonds outstanding that carry a 6.0% interest rate, and its federal-plus-state income tax rate was 25%. How much was the firm's earnings before taxes (EBT)? a. $6,345 b. $8,460 c. $9,540 d. $9,000 e. $11,960