A parallel-plate capacitor is to be designed, using a dielectric of dielectric constant 5, so as to have a dielectric strength of $$10^9 Vm^{-1}$$. If the voltage rating of the capacitor is 12kV, the minimum area of each plate required to have a capacitance of 80 pF is :

A

$$10.5 \times 10^{-6} m^2$$

B

$$21.7 \times 10^{-6} m^2$$

C

$$25.0 \times 10^{-5} m^2$$

D

$$12.5 \times 10^{-5} m^2$$