Question 4 (2.5 points) Packing Co. produces wooden pallets. The company's standards per pallet require 10 boards, each costing $4 per board, and three-quarters of an hour of direct labour. The standard labour rate is $18 per hour. In June, Packing Co. purchased 12,000 boards for a total cost of $69,680. It used 11,800 boards to manufacture 1,200 boxes. Total labour hours were 920 hours, and total labour costs were $16,800. What was the total labour variance for June? O $360 F O $600 U C $600 F $360 U Page 4 of 40