Genent Industries, Inc. (GII), developed standard costs for direct material and direct labor. In 2020, GII estimated the following standard costs for one of their major products, the 30-gallon heavy-duty plastic container. During July, Gll produced and sold 4000 containers using 1400 pounds of direct materials at an average cost per pound of $45 and 2090 direct manufacturing labor hours at an average wage of $18.75 per hour. The direct manufacturing labor efficiency variance during July is: $1620.00 unfavorable $1567.50 tavorable $1687.50 unfavorable $3187.50 favorable