Answer
The right option is (C).
Explanation
In the nuclear fission reaction, the nucleus of atoms breaks in such a way that it converts into another smaller size atoms. On this breakdown, with new atoms, some neutrons and lot of energy also released. To initiate fission reaction, some initial energy required which is fulfilled by bombardment of neutrons. For example in Uranium-235 by bombardment of neutrons, the breakdown reaction starts, in which the two lower weight atoms like krypton-92, barium-141 formed and two neutrons with a lot of energy. The Urr-235 converts to two lower weight atoms and energy. So, the right option is (C).
