Roster Corporation produces clocks. According to company standards, it should take 2 hours of direct labor to produce a clock. The company's standard labor cost is $10 per hour. During June, the company produced 5,600 stopwatches and used 13,200 hours of direct labor at a total cost of $303,600. What is Roster's direct labor rate variance for June? OA. $2,000 unfavorable B. $171,600 unfavorable OC. $171,600 favorable OD. $2,000 favorable