When we consider the two-electron states of helium in perturbation theory, we take the e-e coulomb interaction to be the perturbation. a) what is the unperturbed energy and degeneracy of the multiplet of first excited states including spin? b) construct the states for 1-0, 3-1 and for 1-1, s 0 as properly symmetrized linear combinations of |space〉 |spin) c) without doing any calculation, which (if any) of the states in (b) have the lower energy when including the perturbation? give a physical argument justifying your answer.