If $$(3x -1)^3 + (4x - 3)^3 + (2x + 1)^3 = 3(3x - 1) (4x - 3)(2x +1)$$ and x ≠ $$\frac{1}{3}  then  x = ?$$

A

$$\frac{1}{2}$$

B

1

C

2

D

$$\frac{1}{4}$$