Consider the following Caves: 1. Udayagiri Caves 2. Khandagiri Caves 3. Shashur Caves Which of the given above caves is/are partly natural and partlyr artificial caves of Jain monks?

• A. 1 and 3 only
• B. 2 only
• C. 1 and 2 only
• D. 1, 2 and 3