Why does Achilles quarrel with Agamemnon?

A.
Achilles is disgusted by Agamemnon's shameless and greedy behavior.

B.
Agamemnon is disgusted by Achilles's loyalty to Patroclus.

C.
Agamemnon refuses to pay Achilles for his service.

D.
Achilles refuses to obey the biddings of the gods.