Explanation:

INS Karanj is a Kalvari class diesel electric submarine of the Indian Navy.it was commissioned on 4 September, 1969 and decommissioned on 1 August, 2003. 
Justification: This is the third of the six Scorpene-class submarines being built by Mazagon Dock Shipbuilders Limited (MDL) under the Project 75 programme of Indian navy.
Option B: It is designed to operate in all theatres, including the tropics. It is provided with all means and communications to ensure interoperability with other components of a naval task.
It has superior stealth features such as advanced acoustic silencing techniques, low radiated noise levels and hydrodynamically optimized shape. These stealth features give it an invulnerability, unmatched by most submarine.