Lewis Company's standard labor cost of producing one unit of Product DD is 3.70 hours at the rate of $12.90 per hour. During August, 40,300 hours of labor are incurred at a cost of $13.10 per hour to produce 10.700 units of Product DD. (a) Compute the total labor variance. Total labor variance $ (b) Compute the labor price and quantity variances. $ Labor price variance Labor quantity variance $ (c) Compute the labor price and quantity variances, assuming the standard is 3.90 hours of direct labor at $13,30 per hour. Labor price variance $ Labor quantitv variance $ a