Bite Grill, a fast-food restaurant, includes hamburgers as one of its menu items, with meat being a major material in hamburgers. In the month ending in December, the company manufactured and sold 500 hamburgers, using 400 pounds of meat and 16 hours of direct labor. The meat actaully costs the company $1,300 and the direct labor actually costs the company $240. As per the standard cost card, each hamburger requires 0.75 pounds of meat, at a cost of $3.50 per pound and each hamburger requires 0.04 hours of direct labor, at a cost of $14 per hour. The labor rate variance would be closest to: $16F $87.5 F $16U $87.5 U $12.5F