Dear Mr. Richardson, As you know, I have been a longtime customer of Richardson's Hardware. I have always valued the service that I received from your store and have always given my business to Richardson's Hardware instead of the large chain stores nearby. However, I have been shocked and disappointed by the service I have received lately. First of all, there are barely any sales associates on site. One day, I had several questions to ask about various products but could not ask a single one because it was impossible to keep anyone's attention for more than a minute. As a result, I decided to hold off purchasing some items because I could not get the information I needed. In addition, there was only one cashier working the register last Saturday. Having one cashier, of course, is unacceptable on the weekends when your store is busiest. It took me nearly 30 minutes to make it to the front of the line. When I finally got there, the credit card machine was not working properly, and I was forced to pay cash. The cashier did not even apologize for the inconvenience. Richardson's Hardware has been in our community for over 50 years. It has always been known for quality merchandise and excellent service. Therefore, I know you will see to these matters and make whatever improvements are necessary. Sincerely, Gillian Kwon What is the central idea of this letter? OA. Richardson's Hardware is known for quality merchandise and excellent service. OB. Richardson's Hardware is no longer providing proper service to its customers. OC. Richardson's Hardware is losing its customers to the large chain stores nearby. OD. Richardson's Hardware is reducing its weekend staff as a way to save money.​