Ise ACCOU A Company's master budget shows that the planned activity level for next year is expected to be 20,000 machine hours. At this level of activity, the following manufacturing overhead costs are expected: Indirect labour $45,000 Factory supplies 4.000 Indirect materials 21,000 Depreciation on factory building 15.000 Total manufacturing overhead $85.000 Indirect labour, factory supplies and indirect materials are variable costs. If the company operates at 21.000 machine hours, how much is allowed on a flexible budget for manufacturing overhead costs? Select one: a $89.250 O b. $73,500 C. 588,500 O d. $85.000