Lewis Company's standard labor cost of producing one unit of Product DD is 3.20 hours at the rate of $12.50 per hour. During August, 42,600 hours of labor are incurred at a cost of $12.65 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 $ (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 3.50 hours of direct labor at $12.85 per hour. Labor price variance $ Labor quantity variance $