Which Statement Correctly Describes the Difference Between the ¹²C, ¹³C

Multiple Choice

Which statement correctly describes the difference between the ¹²C, ¹³C and ¹⁴C isotopes of carbon?

A) They have the same number of protons but different numbers of electrons.
B) They have the same number of neutrons but different numbers of electrons.
C) They have the same number of electrons but different numbers of protons.
D) They have the same number of protons but different numbers of neutrons.
E) They have the same number of protons, electrons, and neutrons but
Different atomic masses.