A student listed the characteristics of chemical and nuclear reactions. Chemical and Nuclear Reactions

C:
A change in atomic number of elements takes place
D:
The atomic number of elements remains the same

Which of these statements best explains the identity of Reaction D?
Olt is a nuciear reaction because the atomic number remains the same when the number of valence electrons changes.
Oit is a nuclear reaction because the atomic number remains the same when the particles are emitted from the nucleus.
Oit is a chamical reaction because the atomic number remains the same when the number of neutrons and protons changes.
Oit is a chemical reaction because the atomic number remains the same for all elernents while a rearrangement of atoms through bonding occurs.