Henner Company estimates that its overhead costs for 2020 will be $864,000 and output in units of product will be 320,000 units. Required 1. Calculate Henner's predetermined overhead rate based on expected production. 2. If 27,000 units of product were made in March 2020, how much overhead cost would be allocated to the Work in Process Inventory account during the month? 3. If actual overhead costs in March were $74,900, would overhead be overapplied or underapplied and by how much? 4. Prepare the journal entry to close the over or underapplied overhead to cost of goods sold