A pop can is resting on a table. If the "gravitational force of the Earth acting down on the can" is the action force, the then reaction force is O a) the downward gravitational force exerted by the Earth on the table. O b) the normal force acting upwards on the can. O c) the normal force acting downward on the Earth. O d) the gravitational force of the can acting upward on the Earth. Oe) none of the above