Sunland Co. produces wooden boxes. The company's standards per box require 5 boards, each costing $9 per board and half of an hour of direct labour. The standard labour rate is $14 per hour. In August, Sunland Co. purchased 12090 boards for a total cost of $122200. It used 11530 boards to manufacture 1970 boxes. Total labour hours were 1070 hours, and total labour costs were $16250 What was the labour price variance? O $1270 U O $4160F O $1270F O $4160U