On May 1, Wildhorse Company had beginning inventory consisting of 366 units with a unit cost of $8. During May, the company purchased inventory as follows: 732 units at $8 1098 units at $9 The company sold 1830 units during the month for $14 per unit. Wildhorse uses the average-cost method. Assuming that a periodic inventory system is used, the cost of Wildhorse's inventory at May 31 is (Round average cost per unit to 2 decimal places, e.g. 12.52.) $18666 $2928 $3294 $3111