A point charge of $$10^{-8}$$ is placed at origin. The work done in moving a point charge $$2 \mu C$$ from point A(4, 4, 2) m to B(2, 2, 1) m is _____J $$\left(\frac{1}{4\pi\epsilon _{0}}=9\times10^{9} \text{in SI units}\right)$$

A

$$15\times10^{-6}$$

B

$$30\times10^{-6}$$

C

0

D

$$45\times10^{-6}$$