Two material having the dielectric constans `K_(1)` and `K_(2)` are filled between two parallel plates of a capacitor.
where area of each plate is `A` and the distance between the plates is `d`.
The capacitor of the capacitor is:
A. `(A epsilon_(0)(K_(1) xx K_(2)))/(d(K_(1) + K_(2)))`
B. `(A epsilon_(0)(K_(1) - K_(2)))/(d)`
C. `(A epsilon_(0)(K_(1)K_(2)))/((K_(1) + K_(2)))`
D. `(A epsilon_(0)(K_(1) +K_(2)))/(d)`