The correct answer is B. The pedestal-mounted controller on a horizontal electro-mechanical anchor windlass allows both the warping heads and the wildcats to rotate in either direction of rotation at discrete speeds from zero to maximum. This is because the controller provides proportional control over the electric motors that drive the warping heads and wildcats, enabling full bidirectional and variable speed operation. The other options are incorrect because they do not accurately describe the full capabilities of the pedestal-mounted controller. Options A and D incorrectly limit the rotation direction of either the warping heads or the wildcats, while option C incorrectly states that both components can only rotate in a single direction.