H(x) =x^{3}-3x^{2}+9x-27

Find all zeros of this function.

3i, -3i, -3

3, -3, -3i

3i, 3, -3

3i, -3i, 3

Write the polynomial as a product of linear factors

(x-3i)(x+3i)(x+3)

(x-3i)(x-3)(x+3)

(x-3i)(x+3i)(x-3)

(x-3)(x+i)(x+3i)