Factor this expression.
3x2 - 12x
A3(x2 - 4)
B3x(x - 4)
C3x(x2 - 4)
D3(x - 4)
3x2 - 12x
A3(x2 - 4)
B3x(x - 4)
C3x(x2 - 4)
D3(x - 4)