The correct answer is A. Karan Singh.
Karan Singh was born on 9 May 1931 in Jammu, British India. He is a politician, philanthropist, poet and son of Maharaja Hari Singh. He was the last Regent of Jammu and Kashmir from 1949 to 1953. He was also the first Minister of External Affairs of India from 1964 to 1966. He is a member of the Indian National Congress party.
Bikramjit Singh is a businessman and politician from Punjab, India. He is the son of former Chief Minister of Punjab, Sardar Partap Singh Kairon. He is the President of the Shiromani Akali Dal (Badal) party.
Aditya Singh is a cricketer from India. He is the son of former Indian cricketer, Virender Sehwag. He is a right-handed batsman and right-arm off break bowler.
None of these is the correct answer.