The correct answer is:
CREON:
I am the guilty cause. I did the deed, / Thy murderer. Yea, I guilty plead. / My henchmen, lead me hence, away, away, /A cipher, less than nothing; no delay!
If you read these lines, you will see that Creon has finally realized that his hubris led to all tragedy in the play. If he weren't so proud and stubborn and if he had allowed Antigone to give her brother Polynices a proper burial, nothing bad would have happened. However, this way, Antigone killed herself, but Creon's son and wife also committed suicide.