Sweet & Sour company uses the LIFO method under the perpetual inventory system. Below is some information from the company's inventory records: Date Units Purchase Cost/Unit Sales Units July 1-Beg. Inventory 200 $15 July 5 Purchase 30 $10 July 10 Purchase 20 $20 July 15 Sale 150 The Cost of Goods Sold from the July 15 sale is a. $1,500. b. $2,200. c. $1,300. d. cannot be determined from this data