You Push on Box G That Is Next to Box

Multiple Choice

You push on box G that is next to box H,causing both boxes to slide along the floor,as shown in the figure.The reaction force to your push is

A) the push of box G on box H.
B) the push of box H on box G.
C) the push of box G against you.
D) the upward force of the floor n box G.
E) the acceleration of box G.