Detailed Instructions: In this task, you will be presented with a multiple-choice question in Persian, and you should answer the question based on your knowledge. Classify the answers based on options.
Problem:در زمان کدام پادشاه، بحرین از خاک ایران جدا شد؟ <sep> (A) مظفرالیدنشاه (B) شاه اسماعیل (C) محمد رضاپهلوی (D) ناصرالدینشاه
Solution:
C