Trull Company uses a standard cost system. Variable overhead costs are allocated based on direct labor hours. In the first quarter, Trull had a favorable cost variance for variable overhead costs. Which of the following scenarios is a reasonable explanation for this variance? O A. The actual variable overhead costs were higher than the budgeted costs. O B. The actual number of direct labor hours was lower than the budgeted hours. OC. The actual variable overhead costs were lower than the budgeted costs. OD. The actual number of direct labor hours was higher than the budgeted hours