With reference to the Indira Gandhi National Centre for the Arts (IGNCA), which of the following statements are correct? 1. IGNCA is an autonomous organisation established by the Government of India under the Ministry of Culture. 2. It has started a Gurukul Revival Course to train people in the field of heritage conservation and promotion. 3. Its mandate includes preparing a National Register of rock-art sites and a National Register on ethnography. 4. It is the nodal agency for ‘Vedana Nidan’ and bibliographic compilation.