Comet Company reported the following costs during the period: Direct materials $ 77,000 Sales commissions $ 31,600 Factory depreciation $ 24,000 Direct labor $196,800 Indirect labor $ 60,000 Indirect materials $ 12,000 Other factory related costs $125,000 Comet applies manufacturing overhead to jobs using a predetermined rate based on a formula that estimated $200,000 of manufacturing overhead and an estimated activity level of $160,000 direct labor dollars. Over- or under-applied manufacturing overhead for the period is closest to $21,000 under-applied OB.$5,000 under-applied $36,800 over-applied $25,000 over-applied OD