Step 1: Identify Al-Biruni: Al-Biruni was an 11th-century Central Asian scholar who accompanied Mahmud of Ghazni and studied Sanskrit and Indian sciences.
Step 2: Recall his famous work: His account of India, written in Arabic, is titled Kitab-ul-Hind (also known as Tahqiq-i-Hind) — a systematic ethnographic study of Indian society, religion, and sciences.
Final Answer: Kitab-ul-Hind – option (B).