Describe the action and reaction force pairs involved when two students standing on separate skateboards push off of one another

a) Both students exert equal and opposite forces on each other, causing both skateboards to move in opposite directions.

b) One student exerts a force on the other without any reaction force.

c) The force exerted by one student causes the other student to move, while the first student remains stationary.

d) The action and reaction forces cancel each other out, resulting in no movement for either student.