A parallel plate capacitor is to designed , using a diectric of dielectric constant 5, so as to have a dielectric strengh of `10 ^(9) V. m ^(-1) ` . If the voltage rating of the capacitor is 12 kV ,the minimum area of each plate required to have a capacitance of 80 pF is

Options

A. `10.5 xx 10 ^(-6 ) m^(2)`
B. `21. 7 xx 10 ^(-6 ) m^(2)`
C. `25.0 xx 10^(-5) m^(2)`
D. `12.5 xx10 ^(-5) m ^(2)`