At the end of the Third Episode, Oedipus thinks Jocasta is upset for what reason?

Oedipus' better half, Jocasta, enters and persuades Oedipus that he ought to neither slaughter nor banish Creon, however, the hesitant Lord stays persuaded that Creon is liable. Creon leaves, and the Chorus consoles Oedipus that it will dependably be faithful to him. Oedipus discloses to Jocasta how Tiresias denounced him, and Jocasta reacts that all prophets are false. As evidence, she offers the way that the Delphic prophet revealed to Laius he would be killed by his child, while really his child was given out of Thebes a role as an infant and Laius was killed by a band of hoodlums. Her story of his murder, notwithstanding, sounds commonplace to Oedipus, and he makes a request to hear more.