The Davidson Corporation produces clocks. According to company standards, it should take 2 hours of direct labor to produce a clock. Davidson's standard labor cost is $10 per hour. During June, Thomas produced 6,200 stopwatches and used 13,000 hours of direct labor at a total cost of $156,000. What is Thomas' direct labor rate variance for June?

A. $26,000 favorable

B. $600 favorable

C. $26,000 unfavorable

D. $600 unfavorable