A company's planned activity level for next year is expected to be 100000 machine hours. At this level of activity, the company budgeted the following manufacturing overhead costs: Variable Fixed Indirect $220000 Depreciation $50000 materials Indirect labor 250000 Taxes 10000 Factory supplies 30000 Supervision 40000 A flexible budget prepared at the 90000 machine hours level of activity would show total manufacturing overhead costs of $550000. $450000. $500000. $540000