Splish Company applies overhead based on direct labour hours. Two direct labour hours are required for each unit of product. Planned production for the period was set at 8,500 units. Manufacturing overhead is budgeted at $127,500 for the period (20\% of this cost is fixed). The 16,730 hours worked during the period resulted in the production of 8,220 units. The variable manufacturing overhead cost incurred was $103,400 and the fixed manufacturing overhead cost was $28,500. (a) Your answer is correct. Calculate the variable overhead spending variance for the period. Calculate the variable overhead efficiency (quantity) variance for the period