please include step by step calculation and explanation

Question Help B Assume Bargain.com began January with 8 units of inventory that cost a total of $128. During January, Bargain.com purchased and sold goods as follows: Jan. 8 Purchase 24 units @ $17 14 Sale 20 units @ $34 22 Purchase 16 units @ $19 27 Sale 24 units @ $34 Suppose Bargain.com used the weighted-average inventory costing method and the perpetual inventory system. Compute the weighted average unit cost of the company's inventory on hand at January 8. Round weighted average unit cost to the nearest cent. O A. $18.00 B. $16.75 C. $16.50 D. Cannot be determined from the data given