Given the task definition and input, reply with output. In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

[header] How to stay in contact with your clients [title] Send relevant information on a regular basis. [step] As you read professional literature, newspapers, magazines, trade publications, and internet articles, be thinking about your clients. When you find an article which would be helpful to them, take the time to send them a link or a copy along with a short note explaining how you feel it will be of help or interest to them. <sep> (A) [title] Develop a regular newsletter for your clients. [step] Write a newsletter that details events, new products, and other information that the clients may find useful. (B) Communicate your reactions or responses to helpful articles as they come up. [substeps] For example, suppose you have a client who has been checking their email a lot lately and needs your attention as soon as you can. (C) Use role-play to forge relationships with your clients. [title] Evaluate each client's emotional and mental state. (D) [substeps] If you are interested in a particular topic, write about that. Remember that this will be more important when you receive your invitation to stay in touch.
A