According to the Cabinet Secretariat Resolution of 1 January 2015 constituting the NITI Aayog, consider the following:

1. The Prime Minister of India is its Chairperson.

2. The Vice-Chairperson is appointed by the Prime Minister.

3. Its Chief Executive Officer is appointed by the Prime Minister for a fixed tenure.

4. Its Regional Councils are convened by the Prime Minister.

How many of the above are correct?