Epley Corporation makes a product with the following standard costs:

	Standard Quantity or Hours		Standard Price or Rate
Direct materials	3.5	pounds	$ 3.00	per pound
Direct labor	0.8	hours	$19.00	per hour
Variable overhead	0.8	hours	$ 8.00	per hour

In July the company produced 3,300 units using 12,240 pounds of the direct material and 2,760 direct labor-hours. During the month, the company purchased 13,000 pounds of the direct material at a cost of $35,100. The actual direct labor cost was $51,612 and the actual variable overhead cost was $20,148. The company applies variable overhead on the basis of direct labor-hours. The direct materials purchases variance is computed when the materials are purchased. The variable overhead efficiency variance for July is:

$960 F

$960 U

$876 F

$876 U