TD-SRC1 excitation energies are used as reference values in this work, because that method was specifically parameterized to reproduce experimental K-edge excitation energies, and works very well in that capacity. These functionals use a large fraction of exact exchange ( 50%) at short range, to reduce differential selfinteraction errors between occupied core and valencevirtual MOs. As a further point of comparison we report TD-BH&HLYP calculations, since that functional uses 50% Hartree-Fock exchange without range separation.