Which one of the following combinations of quantum numbers can refer to an electron in a ground-state cobalt atom (z = 27)?

Atomic number of Co is 27 so the electronic configuration will be [Ar] 4s² 3d⁷ where Ar has electronic configuration  1s² 2s² 2p⁶ 3s² 3p⁶.

n=3 ,l=2 ,m= -2,-1,0,+1,+2