Frames Incorporated budgeted three hours of direct labor per unit at $11.75 per hour to produce 550 units of product. The 550 units were completed using 1,750 hours of direct labor at $12.00 per hour. What is the direct labor rate variance? OA. $437.50 unfavorable OB. $437.50 favorable O C. $137.50 favorable D. $137.50 unfavorable