Answer the following questions using the information below: Robb Industries, Inc. (RII), developed standard costs for direct material and direct labor. In 2004, RII estimated the following standard costs for one of their major products, the 10-gallon plastic container. During June, RII produced and sold 5,000 containers using 490 pounds of direct materials at an average cost per pound of $32 and 250 direct manufacturing laborhours at an average wage of $15.25 per hour. June's direct manufacturing labor efficiency variance is: $62.50 unfavorable None of these answers are correct. $3,811.75 unfavorable $62.50 favorable