Al-Biruni depended mainly on the works of Brahmansa and often quoted from the Vedas, the Puranas, the Bhagavad Gita, the works of Patanjali, and the Manusmriti.
From the above line, which of the following can be inferred?
A. He understood the oppression that untouchables faced in Indian society.
B. He read extensively about the existence of different religions in India.
C. He had a clear understanding of state diplomacy and administration.
D. He learned a lot about Indian society by reading ancient texts.
