Lewis Company's standard labor cost of producing one unit of Product DD is 4.00 hours at the rate of $12.00 per hour. During August, 40,600 hours of labor are incurred at a cost of $12.15 per hour to produce 10,000 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 Compute the labor price and quantity variances, assuming the standard is 4.1 hours of direct labor at $12.25 per hour