In Antigone, Haimon argues with Creon during Scene 3. Why does Sophocles include this argument?

to illustrate that Creon's pride is so great that he orders his son to be banished

to show that Creon listens to his elderly advisors instead of his son because of his pride

to portray Haimon's advice as bad, which shows that Creon has not raised him well

to show that Haimon's advice is good, but Creon's pride is so great he will not listen to it