What belief causes Creon to decide at last that his decree about Polyneices's burial is against the gods' will?
a. Teiresias's anger is a sign that he speaks out of jealousy.
b. Teiresias has been bribed to deliver a tragic prophecy.
c. Teiresias's prophecies have proved true in the past.
d. Teiresias only reports what the boy claims to have seen.