Correct option is A
Brihatsamhita, authored by the ancient Indian scholar Varahamihira, is referred to as the Shatsahastri Samhita. It is an encyclopedic work on astronomy, astrology, geography, and natural sciences. The title Shatsahastri Samhita implies a comprehensive collection of 100,000 verses, though the Brihatsamhita itself does not contain that many verses but is considered a monumental work due to its depth and coverage.
The Brihatsamhita was written in the 6th century CE and provides valuable insights into ancient Indian knowledge systems, including details on planetary movements, architecture, gemology, and meteorology.