Which one of the following statements is not correct?
(A) Fusion is the combination of heavy nuclei of elements resulting in the release of heat energy
(B) Neutron bombardment is the most common and practiced method of initiation of reaction in fission materials
(C) When the multiplication factor is greater than 1, the chain reaction is uncontrollable
(D) The reactor produces a, b, g and neutron radiations. Of all these radiation is the most dangerous