Katrina pushes off a flat sidewalk on her new skateboard.
What causes her to move?
O A. The force of her push overcomes the forces of gravity and friction
OB. The force of gravity overcomes the forces of her push and friction
o C. The force of friction overcomes the normal force of the skateboard and the force of gravity.
o D. The normal force of the skateboard overcomes the force of her push and the force of gravity