For changing the capacitance of a given parallel plate capacitor, a dielectric material of dielectric constant K is used, which has the same area is the plates of the capacitor. The thick of the directrie slab is `(3)/(4)d,` where ‘d’ is the separation between the plates of parallel plate capacite. The new capacitance (C') in terms of original capacitance`(C _(0))` is given by the following relation:

Options

A. `C = (4K )/( K + 3) C _(0)`
B. `C ' = (3 + K )/( 4 K ) C _(0)`
C. `C'= (4 +K)/(3) C _(0)`
D. `C'= (4)/(3 + K ) C _(0)`