3. DQ 4- Chapter 5 Discussion. Create your initial post on the DQ 4 Discussion Board in response to: Paul Smith is opening a plumbing supply store in University City. He plans to sell plumbing parts and materials to both wholesale and retail customers. Since contractors (wholesale customers) prefer to buy parts and pay at the end of the month, Paul expects he will have to offer charge accounts. He plans to offer charge sales to wholesale customers only and to require retail customers to pay either with cash or credit cards. Paul wondered what expenses his business would incur relative to the charge sales and the credit cards. Write a memo to Paul Smith outlining the potential cost of accepting charge customers. Discuss the difference between the allowance method for uncollectible accounts and the direct write-off method. Also discuss the cost of accepting credit I cards