The correct option is A Mumbai
Bhabha Atomic Research Center is India's multi disciplinary Nuclear research center headquartered in Trombay, Mumbai. It was first created as Atomic Energy Establishment by the Government of India with its founding director Homi J. Bhabha on 3 January, 1954. It was renamed on 22 January 1967, after the death of Homi J. Bhabha in 1966.