The following labor standards have been established for a particular product: Standard labor-hours per unit of output Standard labor rate 8.9 hours $16.50 per hour The following data pertain to operations concerning the product for the last month Actual hours Actual total labor cost Actual output Worked 9,500 hours $153,900 940 units What is the labor rate variance for the month? Multiple Choice $15,861 F $18,371 U $15,861 U $2,850 F