please help. this is all $1$ question

Requirements:

$1.$

Prepare a perpetual inventory record for the merchandise inventory using the FIFO inventory costing method.

$2.$

Prepare a perpetual inventory record for the merchandise inventory using the LIFO inventory costing method.

$3.$

Prepare a perpetual inventory record for the merchandise inventory using the$$ weighted$-$average inventory costing method.

$4.$

Determine the$$ company's cost of goods sold for August using$$ FIFO, LIFO, and$$ weighted$-$average inventory costing methods.

$5.$

Compute gross profit for August using$$ FIFO, LIFO, and$$ weighted$-$average inventory costing methods.

$6.$

If the business wanted to maximize gross$$ profit, which method would it$$ select?