A parallel plate capacitor is made of two circular plates separated by a distance of 5 mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is $3 \times 10^4 V/m$, the charge density of the positive plate will be close to :

Question

( A ) $3 \times 10^{-7} C/m^2$
( B ) $6 \times 10^{-7} C/m^2$
( C ) $3 \times 10^{4} C/m^2$
( D ) $6 \times 10^{4} C/m^2$