Correct option is B
The Prime Minister of India is the Ex-officio Chairman of NITI Aayog.
Planning Commission was replaced by a new institution called NITI Aayog on 1st January, 2015
Chief Executive Officer of NITI Aayog is Shri B.V.R. Subrahmanyam
Vice Chairperson, NITI Aayog is Shri Suman K Bery