Elm Industries uses a standard cost accounting system. During the month of May, Elm's actual total direct labor costs are $51,450. The direct labor rate variance is $1,800 unfavorable, and the direct labor efficiency variance is $750 favorable. What is the total amount of direct labor costs that Elm applies to its work in process inventory for the month of May? O $50,400 O $51,450 $52,500 O $53,250 O None of the above