Who among the following past presidents of India never served as a Chief Minister of a state in India?

Q. Who among the following past presidents of India never served as a Chief Minister of a state in India?
Answer: Dr, Zakir Hussain
Notes: D. Jatti had worked as Chief Minister of State of Mysore. Neelam Sanjiva Reddy had worked as Chief Minister of Andhra Pradesh. Zail Singh worked as Chief Minister of Punjab. Dr. Shankar Dayal Sharma had served as Chief Minister of Bhopal State.