If, $$a^{\frac{1}{3}} + b^{\frac{1}{3}} + c^{\frac{1}{3}} = 0,  then  (a + b +c)^6$$ is equal to:

A

$$729  a^2 b^2 c^2$$

B

$$729  abc$$

C

$$81  abc$$

D

$$81 a^2b^2c^2$$