In nuclear fission

A. The original elements change into completely different elements

B. The electrons of the element change

C. The molecules rearrange themselves to form other molecules

D. None of the above

Answer: Option A

Solution(By Examveda Team)

Nuclear fission is a process where the nucleus of an atom is split into two or more smaller nuclei, known as fission products.
The fission of heavy elements is an exothermic reaction, and huge amounts of energy are released in the process.