World Company expects to operate at 80% of its productive capacity of 66,250 units per month. At this planned level, the company expects to use 26,500 standard hours of direct labor. Overhead is allocated to products using a predetermined standard rate of 0.500 direct labor hours per unit. At the 80% capacity level, the total budgeted cost includes $53,000 fixed overhead cost and $331,250 variable overhead cost. In the current month, the company incurred $389,000 actual overhead and 23,500 actual labor hours while producing 50,000 units. (1) Compute the overhead volume variance. (2) Compute the overhead controllable variance.