If a 3×33 \times 33×3 matrix AAA satisfies A3+A2+A+I=0A^3 + A^2 + A + I = 0A3+A2+A+I=0, what are the possible eigenvalues of AAA?
±1\pm 1±1
±i,−1\pm i, -1±i,−1
1,i,−i1, i, -i1,i,−i
0,1,−10, 1, -10,1,−1