Canada Ltd uses the FIFO assumption with the periodic inventory method. Units Unit cost $ Total cost $ Beginning inventory 12 10 120 Purchases 10 12 120 Purchases 6 11 66 Sales 16 What was the value assigned to the closing stock of this item at the end of the period? Select one: o a. $138 b. Not one of the options C. $120 o d. $66 e. $144