An initially electrically neutral conducting sphere is placed on an insulating stand. A negatively-charged glass rod is brought near, but does not touch the sphere. Without moving the rod, a wire is then attached to the sphere that connects it to earth ground. The rod and wire are then removed simultaneously. What is the final charge on the sphere? a) negative b) positive c) neutral d) It has a fifty percent chance of having a positive charge and a fifty percent chance of having a negative charge