Physics

Newton's third law states that for every action, there is an equal and opposite reaction. The action and reaction forces act on different objects.

When you pull on the rope with a certain force, the action force is the force of your hand pulling on the rope.The reaction force (the equal and opposite force) is the force of the rope pulling on your hand in the opposite direction.

Option A

The force of your friend pulling on the rope is an external force acting on the rope, not the reaction force to your hand's pull.

Option B

The force ...