The Jammu and Kashmir Light Infantry is a regiment of the Indian Army. It is not a central paramilitary force, as stated in option 1. Paramilitary forces refer to non-military organizations that are involved in enforcing the law, maintaining public order, and providing security. The Jammu and Kashmir Light Infantry is specifically a regiment within the Indian Army.

Option 2 suggests that the force is maintained by the state of Jammu and Kashmir. However, the Jammu and Kashmir Light Infantry is part of the Indian Army and is not maintained solely by the state. The Indian Army is responsible for the recruitment, training, and overall management of the regiment.

Therefore, the correct answer is option 3 - the Jammu and Kashmir Light Infantry is a regiment of the Indian Army.