What are the possible rational zeros of f(x) = x4 + 2x3 − 3x2 − 4x − 12?


A. ± 1, ± 2, ± 3, ± 4, ± 5, ± 6, ± 7, ± 8, ± 9, ± 10, ± 11, ± 12

B. 1, 2, 3, 4, 6, 12

C. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

D. ± 1, ± 2, ± 3, ± 4, ± 6, ± 12