The following labor standards have been established for a particular product: Standard hours per unit Standard rate per hour of product 3 $20 During the period the company produced 900 units, working 3,000 hours for a total cost of $62,500. The company's labor rate variance for the month is closest to: a $2,500F b. $6,000 U c. $2.500 U d. $6,000 F