The correct answer is: A. Arvind Panagariya.
Arvind Panagariya was the first Vice-Chairman of the NITI Aayog, a government think tank in India. He was appointed to the position in January 2015 and served until May 2017. Panagariya is an Indian-American economist who is currently a professor at Columbia University. He is a former Chief Economic Advisor to the Government of India.
Raghuram Rajan is an Indian-American economist who is currently the Katherine Dusak Miller Distinguished Service Professor of Finance at the University of Chicago Booth School of Business. He was the 23rd Governor of the Reserve Bank of India from 4 September 2013 to 4 September 2016.
Chandrashekhara Subramanyam is an Indian economist who is currently the Chairman of the Economic Advisory Council to the Prime Minister of India. He was the Chief Economic Advisor to the Government of India from 2014 to 2017.
Rajiv Kumar is an Indian economist who is currently the Vice-Chairman of the NITI Aayog. He was the Secretary of the Department of Economic Affairs in the Ministry of Finance of India from 2015 to 2017.