If ∣z∣=1|z| = 1∣z∣=1, find the range of ∣z2−z+1∣|z^2 - z + 1|∣z2−z+1∣.
[0,3][0, 3][0,3]
[1,3][1, 3][1,3]
[0,2][0, 2][0,2]
[1,2][1, 2][1,2]