If $$\tan 30 \theta = \sin 45^\circ. \cos 45^\circ + \cos 60^\circ$$ and $$3 \theta$$ is an acute angle, then what will be the value of $$\sin 4\theta$$?

A

$$\frac{\sqrt{3}}{2}$$

B

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

C

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

D

1