Each of the Following Describes an "Atom 1" and an "Atom

Multiple Choice

Each of the following describes an "Atom 1" and an "Atom 2." In which case are the two atoms isotopes of each other?

A) Atom 1: nucleus with 6 protons and 8 neutrons,surrounded by 6 electrons Atom 2: nucleus with 7 protons and 8 neutrons,surrounded by 7 electrons
B) Atom 1: nucleus with 8 protons and 8 neutrons,surrounded by 8 electrons Atom 2: nucleus with 8 protons and 8 neutrons,surrounded by 7 electrons
C) Atom 1: nucleus with 92 protons and 143 neutrons,surrounded by 92 electrons Atom 2: nucleus with 92 protons and 146 neutrons,surrounded by 92 electrons
D) Atom 1: nucleus with 1 proton and 0 neutrons,surrounded by 1 electron Atom 2: nucleus with 2 protons and 2 neutrons,surrounded by 2 electrons
E) Atom 1: nucleus with 4 protons and 5 neutrons,surrounded by 4 electrons Atom 2: nucleus with 5 protons and 5 neutrons,surrounded by 4 electrons