You will be given a definition of a task first, then some input of the task.
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 be friends forever with your best friend [title] Communicate with your best friend. [step] Frequent communication is essential to deepening your friendship. Making sure that they feel loved and supported will help you remain friends with them. <sep> (A) Try to develop the " one-on-one " habit. If you feel you are not being supported enough by the two of you, your strong-support factor will be validated. (B) Let them know about your day and random facts about yourself. Listen to them when they speak, and respond with an appropriate amount of enthusiasm so that they feel happy. (C) [substeps] Make sure that your friendship is not completely destroyed by your best friend's absence. Keep in touch from time to time by calling or emailing to see if there is a chance that your friend will reappear. (D) [substeps] Ask your best friend how they are doing and ask how their day has been. Say how you are feeling from time to time and try to put them at ease, giving them reassurance that everything's going to be ok.
Output:
B