well, none of those..
==ground state includes the sub-orbitals of "p", which are: Px,Py,Pz (Well, x,y,and z are supposed to be subscripts and p is in lowercase.)
==it should be:
z=26(right?!)
[Ar] 4s2 3d5 4p1 = 1s2 2s2 2p6 3s2 3p6 4s2 3d5 4p1
==1s2 2s2 2p6 3s2 3p6 4s2 3d5 4px1 4py 4pz...