Let $$z = \left(\frac{\sqrt{3}}{2} + \frac{i}{2}\right)^5 + \left(\frac{\sqrt{3}}{2} - \frac{i}{2}\right)^5$$. If $$R(z)$$ and $$I(z)$$ respectively denote the real and imaginary parts of $$z$$, then:

A

$$I(z) = 0$$

B

$$R(z) < 0$$ and $$I(z) > 0$$

C

$$R(z) > 0$$ and $$I(z) > 0$$

D

$$R(z) = -3$$