which set of quantum numbers best describes a valance electron in Germanium?

a) 4,0,0,1/2

b) 4,1,1,1/2

c) 4,2,-1,1,2

d) 4,2,3,1,2

e) 3,1,1,1/2

the answer they have given is b. What i'm getting is 4,1,-1,1/2

since the 4p valence electron is in the first orbital of 4p, it should have a magnetic quantum number of -1. somebody please explain this to me if i'm not getting this right. thanks