If $$\cos^{2} \theta = \frac{3}{4}$$, where $$\theta$$ is an acute angle, then the value of $$\sin \left(\theta + 30^{\circ}\right)$$

A

1

B

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

C

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

D

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