A parallel plate capacitor has circular plates of radius 8 cm and plate separation 1 mm. The charge on the plates, if potential difference of `100 V` applied is
Options:
(a) `1.78 xx 10^(-8) C`
(b) `1.78 xx 10^(-5) C`
(c) `4.3 xx 10^4 C`
(d) `2 xx 10^(-9) C`