Crane Co. produces wooden boxes. The companys standards per box require 6 boards, each costing $11 per board, and half of an hour of direct labour. The standard labour rate is $14 per hour. In August, Crane Co. purchased 11950 boards for a total cost of $123400. It used 11540 boards to manufacture 1970 boxes. Total labour hours were 960 hours, and total labour costs were $16300. What was the total labour variance for August? $2.98 F $2.98 U $2510 F $2510 U