●Superposition theorem is essentially based on the concept of linearity.

●Superposition theorem states that, “ the response in any element in a network which is linear or bilateral containing more than one independent voltage or current source is the algebraic sum of responses produced by the independent source when each of them is acting alone”.

●The Superposition theorem can be applied to solve networks when the network contains two or more than two sources of anyone, or both types.

Hence, the correct option is (B).