Then Aoi and Uruha had that interesting little duet , that led right into GENTLE LIE and CALM ENVY . And the stage was finally well lit . It was during CALM ENVY that the giant disco ball came out of nowhere ( seriously , I do n't know where they wer hiding that thing o_O ) . And I was like " oh , a giant disco ball .

Question: What nay happen after the ball cane out ?
Answer: None of the above choices .We ordered drinks .We started dancing .We left the club .