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Oriole Company's standard labor cost of producing one unit of Product DD is 3.90 hours at the rate of $10.00 per hour. During August, 41,200 hours of tabor are incurred at a cost of $10.20 per hour to produce 10,500 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 Cnmmite the labor norice and ouantitv variances. (c) Compute the labor price and quantity variances, assuming the standard is 4.2 hours of direct labor at 510,40 per hour