When Using the Superposition Theorem on a Two Source Network

Multiple Choice

When using the superposition theorem on a two source network, if the current produced by one source is in one direction, while that produced by the other source is in the opposite direction through the same resistor:

A) all voltage sources were not properly converted to current sources.
B) the absolute values of the two currents add algebraically, and the direction is the same as the direction of the larger current.
C) the resulting current is the difference of the two and has the direction of the larger current.
D) a mistake in the sign of the result occurred.