1) Beech Soda Inc. uses a perpetual inventory system. The company's beginning inventory of a particular product and its purchases during the month of January were as follows:Quantity Unit Cost Total Cost Beginning inventory (Jan. 1) 16 $ 10 $ 160 Purchase (Jan. 11) 14 12 168 Purchase (Jan. 20) 23 15 345 Total 53 $ 673 On January 14, Beech Soda Inc. sold 25 units of this product. The other 28 units remained in inventory at January 31. Refer to the above data. Assuming that Beech Soda uses the FIFO flow assumption, the 28 units of this product in inventory at January 31 have a total cost of : a. $400 b. $395 c. $405 d. $410