Consider again the two wires in Figure 20.22 but now suppose the currents are in opposit...

Consider again the two wires in Figure 20.22 but now suppose the currents are in opposite directions, with to the right and to the left. Which of the following statements is correct?

(a) The force on the bottom wire is still upward in Figure 20.22, but the force on the top wire is now also upward.

(b) The force on the bottom wire is now downward and the force on the top wire is upward, so the overall effect is a repulsive force.

(c) There is no change.

(reference figure 20.22)