Which of antigone's character traits is contrasted sharply in ismene, her sister and character foil?
a. antigone's devotion to her brothers is contrasted by ismene's lack of love.
b. antigone's pride in her ancestry is contrasted by ismene's disgust at oedipus's actions.
c. antigone's obedience to the law is contrasted by ismene's rebellious streak.
d. antigone's willingness to defy the king is contrasted by ismene's desire to obey the king.