With reference to the Udaigiri-Khandagiri caves, which of the following statements is/are correct?1. They are examples of the rock-cut cave tradition.2. These caves have inscriptions of Kharavela kings.3. The caves were primarily meant for Buddhist monks.Select the correct answer using the code given below:

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