Lewis Company's standard labor cost of producing one unit of Product DD is 3.00 hours at the rate of $10.00 per hour. During August, 40,000 hours of labor are incurred at a cost of $10.10 per hour to produce 13.200 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 $