P. Didee has the following inventory information.

July	1		Beginning Inventory		20 units at $90
	5		Purchases		120 units at $92
	14		Sale		90 units
	21		Purchases		60 units at $95
	30		Sale		58 units

Assuming that a perpetual inventory system is used, what is the ending inventory on a LIFO basis?

a. 4744

b. 4750

c. 4940

d. 4790