$7-63$ Effects of LIFO and FIFO

The Brachman Company is starting in business on December $31,20$X$0.$ In each half year, from $20x1$ through $20x3,$ it expects to purchase $1,000$ units and sell $500$ units for the amounts listed below. In $20x4$ it expects to purchase and sell $500$ units in each half year. In $20x5,$ it expects to purchase no units and sell all remaining units for the amount indicated in the following table:

$\backslash$table$[[,201,202,203,204,205$