Write the next sentence in the following story.

Two girl boxers approach each other and start kick boxing. The taller boxer approaches the shorter boxer and hits the shorter boxer with a straight kick. both boxers

Options are:
I. exchange punches and kicks in the center of the ring.;
II. begin fighting a match, both ends with the taller opponent not far from her opponent on the ground.;
III. break for air and both taller boxer treats their opponent well.;
IV. give each other a high five.;. The answer should be
I.