Max & Co. Ltd uses a periodic inventory system and has the following inventory transactions during July. Date Units Unit Cost Beginning Inventory July 1 18,000 $11 Purchase 10 13,000 $12 Purchase 20 5,000 $13 If 9,000 units are on hand as at the end of July the cost of the ending inventory under First-In-First-Out (FIFO) method is: Select one: a. $113,000 b. $99,000 c. $108,000 d. $117,000