Grouper Company's standard labor cost of producing one unit of Product DD is 4 hours at the rate of $11.60 per hour. During August, 38,800 hours of labor are incurred at a cost of $11.75 per hour to produce 9,600 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 4.1 hours of direct labor at $11.85 per hour. Labor price variance $ Labor quantity variance $ David Inc., which produces a single product, has prepared the following standard cost sheet for one unit of the product. Direct materials (9 pounds at $2.50 per pound) Direct labor (5 hours at $11.00 per hour) $22.50 $55.00 During the month of April, the company manufactures 260 units and incurs the following actual costs. Direct materials purchased and used (2,400 pounds) Direct labor (1,310 hours) $9,840 $14,148 Compute the total, price, and quantity variances for materials and labor. Total materials variance $ Materials price variance $ Materials quantity variance $ Total labor variance $ Labor price variance $ Labor quantity variance $