Correct option is C
Correct chronological order of the Defence Ministers of India:
Sharad Pawar (1991–1993): Served during P.V. Narasimha Rao's tenure.
Mulayam Singh Yadav (2003–2007): Served under Manmohan Singh's leadership.
George Fernandes (1998–2004): Served under Atal Bihari Vajpayee's government.
Rajnath Singh (2019–Present): The current Defence Minister, serving under Prime Minister Narendra Modi.
Sharad Pawar : Handled national security post the 1991 economic crisis and during major military transitions.
Mulayam Singh Yadav: Managed defence issues during the UPA government, focusing on military reforms and security.
George Fernandes: Oversaw defence reforms and was in charge during Kargil War (1999) and India's nuclear tests in 1998.
Rajnath Singh: Focused on military modernization, defence production, and ensuring national security in the current administration.