Six plates of same area A are arranged as shown. Equivalent capacitance of arrangement between A and B is :

Question

 

$(A)\;\frac{3 \in _0 A}{d} \\ (B)\;\frac{\in _0}{4d} \\ (C)\; \frac{2 \in _0}{d} \\ (D)\;\frac{\in _0 A}{d}$