Japan Company produces lamps that require 2 standard hours per unit at a standard hourly rate of $15.00 per hour. Production of 6,300 units required 12,350 hours at an hourly rate of $14.70 per hour. What is the direct labor (a) rate variance, (b) time variance, and (c) total cost variance? Enter favorable variances as negative numbers. a. Direct labor rate variance 3,705 Favorable b. Direct labor time variance 3,750 Unfavorable c. Total direct labor cost variance 78,330 Unfavorable