Which one is the correct one?<br/><br/>1) They had no choice but to obey.<br/><br/>2) They had no choice but obey.<br/><br/>3) They had no choice but to obey the law.<br/><br/>4) They had no choice but obey the law.<br/><br/>5) They had no choice but obeying the law.<br/><br/>6) They had no choice but obeying.<br/><br/>Thanks! ^-^