Write the next sentence in the following story.

People practice ballet in a studio alone and in couples. Then, a boy and a girl dance ballet, then a man enter and dance with the girl. after

Options are:
[i] , a man in a black robe enters and dance in the room after the dancer.;
[ii] , a musician enters and dances with two other musicians.;
[iii] , several couples dance ballet while other people observe.;
[iv] , the boy fall behind right then the girl run on the beach.;. The answer should be
[iii]