Each lamp manufactured at Bright Light uses a standard of 0.75 hours to produce. Production employees are paid a $9 hourly wage. The company incurred 5,000 direct labor hours at a cost of $47,500 to produce 6,700 lamps. Calculate the following variances and determine if it is considered favorable or unfavorable: (A) Direct labor rate variance (B) Direct labor time variance (C) Direct labor cost variance Explain please