Use forward differencing to determine which of the following sequences (an) is not a polynomial of degree two. Choose all that apply. :] (0, 2, 8, 18,32, 50, 72, ...) :] (3, 8, 15, 24, 35, 48, 63, ...) :] (-2, -4, O, 16, 50, 108, 196, ...) :] (-2, 2, 6, 12, 14, 18, 22, ...) :] (1, 6, 13, 22, 33, 46, 61, ...) :] (O, 2, 6, 14, 30, 62, 126, ...)