Assume the sale of 32,000 units results in the following: sales $528,000, variable manufacturing costs $320,000, fixed manufacturing costs $128,000, variable selling costs $55,300, and fixed administrative costs $37,200. If a special order has come offering to buy 3,500 units at $13 per unit and capacity to fill the order is available, the change in income if the special order is accepted is: Multiple Choice O $3,500 decrease. $3,500 increase. 0 $10,500 decrease. 0 $10,500 increase. 0 None of the answers is correct