A company had the following purchases during its first year of operations: in January10 units at $120, in February 20 units at $125, in May 15 units at $130, in September 12 units at $135, and in November 10 units at $140. On December 31, there were 26 units remaining in ending inventory. Using the periodic FIFO inventory costing method, what is the value of cost of goods sold? Select one: a. $5,130. b. $3,540. c. $5,400. d. $8,670