SHOW WORK The PLUM Company produces a line of non-motorized boats. PLUM uses a normal-costing system and allocates manufacturing overhead using direct manufacturing labor cost. The following data are for 2020: Budgeted manufacturing overhead cost Budgeted direct manufacturing labor cost Actual manufacturing overhead cost Actual direct manufacturing labor cost $250,000 $125,000 $220,000 $111,000 Inventory balances on December 31, 2020 (before adjustment) were as follows: Account Ending balance ($) 2020 direct manufacturing labor cost in ending balance ($) 1,000 10,000 100,000 Work in Process Finished goods Cost of goods sold 40,000 120,000 640,000 a. Calculate the manufacturing overhead allocation rate. b. Compute the amount of under-or over-allocated manufacturing overhead. Is the amount under- or over-applied? C. Calculate the ending balances in work in process, finished goods and cost of goods sold (after adjustment) if under- or over-allocated manufacturing overhead is written off to cost of goods sold. d. Calculate the ending balances in work in process, finished goods and cost of goods sold (after adjustment) if under- or over-allocated manufacturing overhead is prorated based on ending balances (before proration) in each of the three accounts