Assume Store.com began July with 10 units of inventory that cost a total of $180. During July, Store.com purchased and sold goods as follows: (Click the icon to view the purchases and sales.) Suppose Store.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 July 8 . Round weighted-average unit cost to the nearest cent. A. $18.75 B. $20.00 C. $18.50 D. Cannot be determined from the data given Assume Store.com began July with 10 units of inventory that cost a total of $180. During July, Store.com purchased and sold goods as follows: (Click the icon to view the purchases and sales.) Suppose Store.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 July 8 . Round weighted-average unit cost to the nearest cent. A. $18.75 B. $20.00 C. $18.50 D. Cannot be determined from the data given