'Which of the following statements is not true about nuclear energy generation

"Which of the following statements is not true about nuclear energy generation in a nuclear reactor?
(A) Energy is obtained by a process called nuclear fission.
(B) The nucleus of Uranium is bombarded with high energy neutrons.
(C) A chain reaction is set in the process.
(D) In this process a tremendous amount of energy is released at a controlled rate."

generation