ATV Co$.$ began March with no inventory and uses a periodic inventory system. It entered into purchases and sales for March as shown

in the Tableau Dashboard. The CEO has asked you to help her decide whether to use LIFO or FIFO for inventory costing. For March of Year $6,$ compute gross profit under both LIFO and FIFO. $($I have began filling out the table. Everything in red is incorrect and the parts that I have left. I do not know how to get those answers. Please help and thank you.$)$