Meaning of the play - theme
language used to write the play - style
the location and time of the play - setting
arrangement of scenes, characters, and incidents - stage directions
comments which guide the production of the play - structure
the events of the play - plot
Answer would be A.
Answer B makes a bit of sense too, but A more appropriately fits the themes of an aristotelian tragedy.
Creon wants to finish the argument with Antigone, but through his frustration, he ends up doing far more than he actually intended to in the beginning. Sentencing Antigone to death, this development sets the stage for Creon's regret after everything happens.