The correct option is:(b) 4 and 5 only
Explanation:
Nirbhay is a long-range, subsonic cruise missile being developed in India by Defence Research and Development Organisation. The missile has a good loitering capability i.e., it can go round a target and perform several manoeuvres and then re-engage it. Its first trial on 12 March 2013 from Chandipur, Odisha was **. Brahmos is a supersonic cruise missile, while ‘Lakshya’ is an Indian pilot-less target drone system. Kirby'* technology is not inspired by it. It is a “treetop” missile because it can flyover or around hills, can fly at a very low altitude and avoid detection.