If `q_(f)` is the free charge on the capacitor plates and `q_(b)` is the bound charge on the dielectric slab of dielectric constant k placed between the capacitor plates, then bound charge `q_(b)` can be expressed as :

Options

A. `q_(b) = q_(f) (1 - (1)/(sqrt(k)))`
B. `q_b = q_(f) (1 - (1)/(k))`
C. `q_(b) = q_(f) (1 + (1)/(sqrt(k)))`
D. `q_(b) = q_(f)(1 + (1)/(k))`