George Karim's Current Department Store Credit Card Statement Includes a Charge

George Karim's current department store credit card statement includes a charge for merchandise he returned, so he is writing to ask that the charge be removed. To give his claim credibility, George should

A) enclose a copy of the receipt he was given when he returned the merchandise.
B) explain that he is disappointed in the company.
C) ask for $25 for pain and suffering.
D) say he will quit shopping at the store unless his account is corrected within two weeks.