Chris Company uses the perpetual inventory system and had the following activity during the current monthly period.

November 1: Beginning Inventory of 100 units @$20

November 5: Purchased 100 units @ $22

November 8: Purchased 50 units @$23

November 16: Sold 200 units @ $45

November 19: Purchased 50 units @ $25

Using the weighted-average inventory method, the company's ending inventory would be reported at:

A) $2,200.

B) $2,320.

C) $2,250.

D) $2,400.

E) $2,270.

The answer is B but I need a detailed explanation because I do not understand this at all.