Which is the completely factored form of 12x^3 – 60x2 + 4x – 20?
4(3x^2 – 1)(x – 5)
4x(3x^2 + 1)(x – 5)
4x(3x^2 – 1)(x + 5)
4(3x^2 + 1)(x – 5)
4(3x^2 – 1)(x – 5)
4x(3x^2 + 1)(x – 5)
4x(3x^2 – 1)(x + 5)
4(3x^2 + 1)(x – 5)