Giovanni Company produces a product that requires five standard hours per unit at a standard hourly rate

Question:

Giovanni Company produces a product that requires five standard hours per unit at a standard hourly rate of $ 30 per hour. If 3,500 units required 17,700 hours at an hourly rate of $ 30.50 per hour, what is the direct labor?
(a) Rate variance,
(b) Time variance,
(c) Cost variance?