Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sates for WCS12 are as follows: a. Assuming a perpetual inventory system and using the weighted average method, determine the weighted average unit cost after me October 22 purchase. b. Assuming a perpetual inventory system and using the weighted average method, determine the cost of the merchandise 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 inventory on October 31. Round your "average unit cost" to two decimal places