Question: relate to the two long parallel wires shown. Initially the wires are a distance d apart and each has a current i directed into the page. The direction of the force on the right-hand wire due to the current in the left-hand wire is  A) to the right  B) to the left  C) upward in the plane of the page  D) downward in the plane of the page. Please choose an answer from [A, B, C, D].
Answer: B