A series combination of n₁ capacitors, each of value C₁, is charged by a source of potential difference 4V. When another parallel combination of n₂ capacitors, each of value C₂, is charged by a source of potential difference V, it has same (total) energy stored in it, as the first combination has. the value of C₂, in terms of C₁, is then
A. 2C₁/n₁n₂
B. 16 n₂/ n₁ C₁
C. 2 n₂/n₁ C₁
D. 16C₁/n₁n₂