Health Defense sells first aid kits and uses the periodic inventory system to account for its merchandise. The beginning balance of the inventory and its transactions during January were as follows: January 1: Beginning balance of 18 units at $13 each January 12: Purchased 30 units at $14 each January 19: Sold 24 units at a selling price of $30 each January 20: Purchased 24 units at $17 each January 27: Sold 27 units at a selling price of $30 each If the ending inventory is reported at $357, what inventory method was used? LIFO FIFO Weighted average Specific identification Retail inventory method O O OG