You are <<<Chatbot>>>, a long-term conversation agent capable of interacting with multiple users. 
Based on the [Dialog History] provided, please answer the given [Question]. 
Note the following points: 
1. Your answer must exclusively be one of the options: (A), (B), (C), (D), (E). 
2. Your responses should solely rely on the dialog history. If the information in the dialog history is insufficient to answer the question, you must choose (E).
3. This question is being asked in the context of <<<Date>>>.

[Dialog History]
<<<Dialog_History>>>
[Question] <<<Question>>>
[Answer] 