Find the number of protons, neutrons, and electrons in the atomic symbol (including the atomic number) for an isotope with 64 protons and 96 neutrons. Write the answer in the form xza, where a is the mass number, z is the atomic number, and x is the chemical symbol for the unknown element.
a) 64159​X
b) 64160​X
c) 65159​X
d) 65160​X