Belle Auto Detailing reported the following results for the past week: Actual number of cars detailed 240 Actual direct labor hours used 600 Actual total direct labor cost $6,800 Budgeted number of cars to be detailed Standard direct labor cost per hour Standard direct labor per car 250 $8.40 2 What is Belle's direct labor rate variance? (Round intermediary calculations to two decimal places.) HE O A. $45,683 favorable OB. $1,758 unfavorable OC. $45,683 unfavorable OD. $1,758 favorable