Can you help me explain question B and shows step to how to get the answer?

At the beginning of the year, Bridgeport Shipping Ltd., a company that has a perpetual inventory system, had $47,300 of inventory. During the year, inventory costing $189,200 was purchased. Of this, $22,300 was returned to the supplier and a 5% discount was taken on the remainder. Freight costs incurred by the company for inventory purchases amounted to $2,310. The cost of goods sold during the year was $187,600. ) (a) Your answer is correct Determine the balance in the Inventory account at the end of the year. Balance in the inventory account $ 20565 eTextbook and Media Assistance Used List of Accounts Attempts: 5 of 15 used Question Part Score 1.5/1.5 (b) Your answer is partially correct. Prepare the adjusting entry that would be required if the inventory count determined that Bridgeport Shipping had inventory with a cost of $18,800 at the end of the year. (List all debit entries before credit entries. Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter for the amounts.)