42 2 pts SixthZ had planned to produce 1,100 treehouses in 2020. It actually produced 1,000 treehouses. The following table contains cost data for wood and direct labor related to SixthZ's production in 2020: Wood Direct Labor Standard Costs Actual Costs 15 ft @ $10/ft 14,000 ft @ $9.50/ft 20 hr @ $15/hr 23,000 hrs @ $16.50/hr Calculate the Wood efficiency variance. $25,000U $10,000U O $10,000F O $25,000F