The capacitance of capacitors of plate area $A_2 and A_1 (A_2 < A_1)$ at a distance l is

Question

$(A)\;\frac{\in _0 A_2}{l} \\ (B)\;\frac{\in _0A_1}{l} \\ (C)\; \frac{\in_0 \sqrt {A_1A_2}}{l} \\ (D)\;None$