A company had the following purchases during the current year: January 10 units at $120 February 20 units at $i 30 May 15 units at $140 September 12 units at $150 November 10 units at $160 On December 31, there were 26 units remaining in ending inventory. These 26 units consisted of 2 from January, 4 from February, 6 from May, 4 from September and 10 from November. Using the specific identification method, what is the cost of the ending inventory? $3,280 $3,500 $3,640 $3,800 $3,960