Which of the following factorizations is correct?

O x3 + 27 = (x - 3)(x2 + 3x – 9)

O x - 27 = (x - 3)(x2 + 3x +9)

O x3 - 27 = (x - 3)(x2 +9)

O x3 + 27 = (x - 3)(x2 - 9)