Which of the Following Is Correct for Isotopes of the Same

Multiple Choice

Which of the following is correct for isotopes of the same element?

A) The atoms have different numbers of protons and the same number of neutrons.
B) The atoms have the same number of electrons and different numbers of protons.
C) The atoms have different numbers of neutrons and the same number of protons.
D) The atoms have different numbers of electrons but the same number of neutrons.