If $$\frac{5 \cot \theta + \sqrt{3} \cosec \theta}{2\sqrt{3} \cosec \theta + 3 \cot \theta} = 1, 0^\circ < \theta < 90^\circ$$ then the value of $$\frac{\frac{7}{2}\cot^2 \theta - \frac{3}{4} \cosec^2 \theta}{4 \sin^2 \theta + \frac{3}{2} \tan^2 \theta}$$ will be:

A

7

B

2

C

3

D

5