Periodic inventory by three methodsThe beginning inventory at Midnight Supplies and data on purchases and sales for a three$-$month period ending March $31$ are as follows:$1.$Determine the inventory on March $31$ and the cost of goods sold for the three$-$month period, using the first$-$in$,$ first$-$out method and the periodic inventory system.

Inventory, March $31$ $$\_\_\_\_\_\_\_\_\_$

Cost of goods sold$$$$\_\_\_\_\_\_\_\_\_2.$Determine the inventory on March $31$ and the cost of goods sold for the three$-$month period, using the last$-$in$,$ first$-$out method and the periodic inventory system.

Inventory, March $31$ $$\_\_\_\_\_\_\_\_\_\_$

Cost of goods sold$$$$\_\_\_\_\_\_\_\_\_\_3.$Determine the inventory on March $31$ and the cost of goods sold for the three$-$month period, using the weighted average cost method and the periodic inventory system.$$Round the weighted average unit cost to the nearest cent.

Inventory, March $31$ $$\_\_\_\_\_\_\_\_\_\_$

Cost of goods sold$$ $$\_\_\_\_\_\_\_\_\_\_\_4.$Compare the gross profit and the March $31$ inventories, using the following column headings. For those boxes in which you must enter subtracted or negative numbers use a minus sign.$$