Instructions: 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".
Input: [header] How to avoid becoming a " psycho ex " [title] Establish boundaries of communication. [step] Depending on the nature of the break-up, you and your ex need to establish some ground rules about communication going forward. While you may want to talk or contact them still, listen to what your ex says. <sep> (A) If you are still angry, take this into consideration. [substeps] Setting a boundary can help you to communicate with a stranger. (B) If you were to tell your ex how you've been feeling, you would probably find that your marriage fell apart or that you had a fight with your partner. These are all common cues that you should have to establish and obey. (C) [substeps] The best rule of thumb is creating a relationship that's friendly and non-confrontational. When you're still with your ex, it's the person's first point of view, not your own. (D) If they are ignoring you, they likely do not want to communicate. [substeps] Consider asking questions to find out what the boundaries are.
Output:
D