Rajatarangini is a historical chronicle from ancient India. It was written by Kalhana, making option 1 the correct answer. Kalhana was a Kashmiri historian who lived during the 12th century. His work, Rajatarangini, is considered one of the most important sources of information about the history and culture of ancient Kashmir. It covers the history of the Kashmir region from its earliest known rulers up until the time of Kalhana. Rajatarangini is known for its detailed accounts of political events, genealogies of ruling dynasties, and descriptions of the society and culture of ancient Kashmir. It is divided into eight books and has been translated into several languages. Overall, Kalhana`s Rajatarangini is a valuable resource for understanding the history of ancient India.