Hund’s rule of maximum multiplicity specifies that .
A.
electrons will fill orbitals of lower energy first, pairing up only after each orbital of the same energy already has one electron
B.
electrons will fill orbitals of lower energy first, pairing up only after each s and p orbital has one electron
C.
electrons will fill all of the s orbitals before filling any p orbitals
D.
the pattern by which electrons occupy orbitals cannot be predicted