please help me with this multiple choice question.

Sheffield Company has the following inventory information.

July	1		Beginning Inventory	20 units at $90
	5		Purchases	70 units at $80
	14		Sale	40 units
	21		Purchases	30 units at $90
	30		Sale	20 units

Assuming that a perpetual inventory system is used, what is the ending inventory (round all unit costs to three decimal places and all cost of goods sold and balance calculations to nearest dollar) under the moving-average cost method?

$5088

$5094

$5108

$5118