Jeezus ... I really wanted to see this though , but hopefully they come back . Atleast I did n't have to see someone I did n't want to see that probably would ' ve been there . COME BACK DETHKLOK ! AND CHIMAIRA !

Choose from: (I) None of the above choices .; (II) They found out that people they did n't like were going .; (III) They were out of town during the concert .; (IV) The concert tickets had sold out before they could buy one .;
Q: What may have happened to the speaker before the bands had left ?
(IV)