Answer:
B is the wrong answer
Explanation:
Number of protons are what determines which element is resembles. For example a Hydrogen atom will always have 1 proton. If you were to add another proton to that atom then it would become a Helium aton with 2 protons.
The number of electrons can differ as they consititute to ions. Also, nuetron numbers differ as they can show what isotope it talks about. Hence, Proton in a given atom cannot be gained nor lost.
