When a force of 15 newtons is applied to a stationary chair, it starts moving. What can you say about the frictional force between the chair and the floor of the room? A. The force of kinetic friction between the chair and the floor is greater than the force of static friction. B. The force of static friction between the chair and the floor is equal to the force of kinetic friction. C. The normal force acting on the chair is equal to 15 newtons in the upward direction. D. The force of static friction between the chair and the floor is less than 15 newtons.