From this excerpt, we can conclude that the best option to answer is the last one Antigone refuses to allow Creon to believe that Ismene is as brave as she is. This reveals the universal theme that pride goes before a fall.
We can notice Antigona's pride in the last words she said, showing she thinks she deserves what she is having but she won't give it up for her sister. She doesn't wanna Creon to think her sister is braver than her, and puts it in evidence.