Which change to an atom occurs during a nuclear fission reaction?(1 point)

Question

Responses

Neither the atomic number nor the mass number can change.
Neither the atomic number nor the mass number can change.

The atomic number must change, but the mass number cannot.
The atomic number must change, but the mass number cannot.

Both the atomic number and the mass number must change.
Both the atomic number and the mass number must change.

The atomic number cannot change, but the mass number must change.

Answer 1

The atomic number must change, but the mass number cannot.