49. You have been provided with the following information: Per Unit Total Sales $15 $45,000 Less variable expenses 9 27,000 Contribution margin 6 18,000 Less fixed expenses 12,000 Operating profit $6,000 If sales decrease by 500 units, how much will fixed costs have to be reduced by to maintain the current operating profit of $6,000? A)$9,000. B)$6,000 C) $3,000. D) $7,500