In the reported figure, a capacitor is formed by placing a compound dielectric between the plates of parallel plate capacitor. The expression for the capacity of the said capacitor will be: (Given the area of the plate = $$A$$)

A

$$\frac{15}{34} \frac{K\varepsilon_0 A}{d}$$

B

$$\frac{15}{6} \frac{K\varepsilon_0 A}{d}$$

C

$$\frac{25}{6} \frac{K\varepsilon_0 A}{d}$$

D

$$\frac{9}{6} \frac{K\varepsilon_0 A}{d}$$