On June 5, Staley Electronics purchases 150 units of inventory on account for $15 each. After closer examination, Staley determines 40 units are defective and returns them to its supplier for full credit on June 9. All remaining inventory is sold on account on June 16 for $25 each. Required: Record transactions for (a) the purchase of inventory on account, (b) the return of defective inventory, and (c) the sale of inventory on account