A student created the following procedure to rearrange the charges within an uncharged conducting rod so that one end of the rod is positive and the other end is negative.
Step 1: Give a conducting sphere a net positive charge.
Step 2: Touch the positive sphere to one end of the conducting rod.
Step 3: Remove the sphere far from the conducting rod.
The student finds that his procedure does not work. Which of the following modifications to one of the steps, if any, will allow the procedure to accomplish the goal of having one end of the rod be positive and the other end be negative?
(A) In Step 1, the sphere should be given a negative charge.
(B) In Step 2, the sphere should be brought near, but should not touch, the conducting rod.
(C) In Step 3, the sphere should not be removed from contact with the conducting rod.
(D) None of these steps will by itself allow the procedure to work as intended.