73.
The answer is: A
Explanation
The correct option is A: Army.
V.K. Singh is a former four-star General in the Indian Army and served as the 24th Chief of the Army Staff from 2010 to 2012. He is currently a politician and a Minister of State in the Second Modi ministry. He has also been awarded several military and civilian honors, such as the Param Vishisht Seva Medal, the Ati Vishisht Seva Medal, the Yudh Seva Medal, and the Padma Shri.