Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sales for WCS12 are as follows: Oct. 1 Inventory 350 units at $8 13 Sale 190 units 22 Purchase 340 units at $11 20 Sale 300 units a. Assuming a perpetual inventory system and using the weighted average method, determine the weighted average unit cost atter the October 22 purchase. Round your answer to two decimal places per unit b. Assuming a perpetual inventary system and using the weighted average method, determine the cost of goods sold on October 29. Round your "average unit cost to two decimal places C. Assuming a perpetual inventory system and using the weighted average method, determine the inventary on October 31. Round your average unit cost" to two decimal places