Bjork Inc. bases its manufacturing overhead budget on budgeted direct labor-hours. The variable overhead rate is $8.00 per direct labor-hour. The budgeted fixed manufacturing overhead is $42,500 per year, which includes depreciation of $11,900. The direct labor budget indicates that 3,400 direct labor-hours will be required during the year. The overall predetermined overhead rate (ie, the combined fixed and variable rate) for the year should be: a. $8.00 per direct labor-hour b. $17.00 per direct labor-hour c. $20.50 per direct labor-hour d. $12.50 per direct labor-hour