GrandSlam Incorporated incurred the following costs during March:Selling expensesDirect laborInterest expenseManufacturing overhead, actualRaw materials usedAdministrative expenses$ $155,200307,00040,70089,680481,000120,800$During the month, $18,400$ units of product were manufactured and $11,900$ units of product were sold. On March $1,$ GrandSlam carri no inventories. On March $31,$ there were no inventories for raw materials or work in process.Required:a$.$ Calculate the cost of goods manufactured during March and the average cost per unit of product manufactured.b$.$ Calculate the cost of goods sold during March.c$.$ Calculate the difference between cost of goods manufactured and cost of goods sold. How will this amount be reported in the financial statements?d$.$ Prepare a traditional $($absorption$)$ income statement for GrandSlam for the month of March. Assume that sales for the month was $$1,031,000$ and the company's effective income tax rate was $40\%.$