Which of the Following Statements Is Correct

Which of the following statements is correct?

A) The three isotopes of carbon contain the same number of protons and neutrons, but different numbers of electrons.
B) The three isotopes of carbon contain the same number of protons and electrons, but different numbers of neutrons.
C) The three isotopes of carbon contain the same number of electrons and neutrons, but different numbers of protons.
D) The three isotopes of carbon contain the same number of protons, neutrons, and electrons.
E) The three isotopes of carbon contain the same number of protons, but different numbers of electrons and neutrons.