The Requirement That the Ground State Configuration of an Atom

Multiple Choice

The requirement that the ground state configuration of an atom is generated by placing electrons into orbitals from the lowest energy to the highest energy, observing the maximum number allowed for each of these levels is

A) the aufbau principle.
B) Bustamente's principle.
C) Hund's Rule.
D) Murphy's rule.
E) the Pauli principle.