Marigold Co. produces wooden boxes. The company's standards per box require 7 boards, each costing $9 per board, and half of an hour of direct labour. The standard labour rate is $16 per hour. In August, Marigold Co. purchased 11950 boards for a total cost of $122800. It used 11450 boards to manufacture 1880 boxes. Total labour hours were 1040 hours, and total labour costs were $16150 What was the total labour variance for August? O $11100 O $1.14U O $1110F O $1.14 F