b. WhitePen Company makes correction pens. The profit plan and actual results for the previous year, 2020, are as follows: Profit Plan Actual Results Volume Dollars Volume Dollars Sales 12.000 60,000 18,000 72,000 Cost of Goods Sold Raw material 3,600 21,600 6,300 34,650 (KGS) Raw material (Liters) 1,200 12,000 1,980 15,840 Labor (Hours) 300 7,200 720 11,520 Contribution 19,200 9,990 Margin Other costs Depreciation 7,200 3.900 Rent 4,500 1,800 Maintenance 4.800 1,800 Profit before 2,700 2,490 interest and tax The plant manager, Randa, has instructed the plant management accountant to prepare a detailed report to be sent to corporate headquarters comparing each component's actual result with the amounts set forth above in the annual budget. Required: Explain the difference between the expected and actual profit. Show your workings