I think the correct answer is B, simple because the other answer do not fit.
A isn't correct because he doesn't care for gods' laws, since he decided to defy them by not allowing Antigone's brother to have a proper burial.
C isn't correct because he knows she is guilty, and she admitted to committing the crime.
And D is also incorrect, because his son was Antigone's fiance, so he must have known that his son loved her.