Option a is the correct answer. Nasik, Ellora and Ajanta are three of the most famous and ancient sites of rock-cut architecture in western India. Nasik has a group of 24 Buddhist caves dating from the 1st century BCE to the 3rd century CE, as well as some Hindu and Jain caves. Ellora has 34 caves belonging to Hindu, Buddhist and Jain traditions, carved between the 6th and 10th centuries CE. The most spectacular of these is the Kailasa temple, a massive monolithic structure dedicated to Shiva. Ajanta has 29 caves that are renowned for their exquisite paintings and sculptures of Buddhist themes, created between the 2nd century BCE and the 6th century CE