Ariana Bicycle Shop has the following transactions related to its top-selling Mongoose mountain bike for the month of March. Ariana Bicycle Shop uses a periodic inventory system. Date Transactions Units Unit Cost Total Cost March 1 Beginning inventory 20 $220 $4,400 March 5 Sale ($340 each) 15 March 9 Purchase 10 240 2,400 March 17 Sale ($390 each) 8 March 22 Purchase 10 250 2,500 March 27 Sale ($415 each) 12 March 30 Purchase 9 270 2,430 $11,730 For the specific identification metho