27. in the dirac's relativistic theory of hydrogen atom, the first excited states with total angular momentum and orbital angular momentum quantum numbers i-%0)

27. In the Dirac's relativistic theory of hydrogen atom, the first excited states with total angular momentum and orbital angular momentum quantum numbers i-%0)1=0 and (i) I = 1 (A) have different energies (B) are degenerate (C) agree with the non-relativistic Schrodinger treatment of hydrogen atom (with spin-orbit term added) (D) agree with the non-relativistic Schrodinger treatment of hydrogen atom, without spin-orbit coupling term