Al-Biruni, a scholar who accompanied Mahmud of Ghazni, wrote a famous book on India called:
Answer: Option A
Al-Biruni, a polymath from Central Asia, accompanied Mahmud of Ghazni during his invasions of India and wrote the Kitab-ul-Hind (also known as Tarikh-ul-Hind), a comprehensive study of Indian society, culture, and sciences.