The missing part to C is finding the labor quantity variance

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 $ (c) Compute the labor price and quantity variances, assuming the standard is 3.20 hours of direct labor at $10.20 per hour. Labor price variance $