If $$\theta$$ is the acute angle between the lines $$y = 4x$$ and $$y = - 6x$$ then $$sin^{2} \theta$$ =

A

$$\frac{100}{529}$$

B

$$\frac{100}{629}$$

C

$$\frac{10}{23}$$

D

$$\frac{529}{629}$$