$$\frac{\sin^2 52^\circ + 2 + \sin^{2} 38^\circ}{4 \cos^{2} 43^\circ - 5 + 4 \cos^{2} 47^\circ}$$ is:

A

3

B

$$\frac{1}{3}$$

C

-$$\frac{1}{3}$$

D

-3