Can you please solve this in detail.

KZ Company sells many products. Below is an analysis of the inventory purchases and sales of one product for the month of March. KZ Company uses the periodic inventory system. Instructions (a) Using the FIFO assumption, calculate the amount charged to cost of goods sold and ending inventory for March. (b) Using the weighted average method, calculate the amount assigned to the cost of goods sold and ending inventory for March. (c) Prepare the multiple step income statement for March, given that operating expenses are $8,000. (FIFO)