Farley Foods Had Beginning Inventory of $15,000 at March 1

Farley Foods had beginning inventory of $15,000 at March 1, 2008.During the month, the company made purchases of $40,000.The inventory at the end of the month is $17,300.What is cost of goods sold for the month of March?

A) $37,700
B) $40,000
C) $55,000
D) $57,300