Kent County Company produces a single product. The standard cost card for the product follows: Direct material Direct labor..... Variable overhead 3 pounds @ $4/pound = $12 per unit 2 hours @ $8/hour -S16 per unit 2 hours a S5/hour - S10 per unit During a recent period the company produced 500 units of product. Various costs associated with the production of these units are given below: Units produced 500 Direct material used. 1.600 pounds Direct material purchased (3,000 pounds). $12,300 Direct labor cost (950 hours). $7,790 Variable overhead cost incurred $4,655 The variable overhead rate variance is: $345 F $95 F $655.50 F $345 U