King Costume uses a periodic inventory system. The company started the month with 10 masks in its beginning inventory that cost $13 each. During the month, King Costume purchased 52 additional masks for $15 each. At the end of the month, King counted its inventory and found that 6 masks remained unsold. Using the LIFO method, its cost of goods sold for the month is:

A.$832.

B.$840.

C.$78.

D.$820.