Carter heard loud screaming coming from outside his home. He looked out to find two boys punching his younger brother. He immediately went out and grabbed both of the boys, hit them both and pulled his brother away. The two boys filed charges. Carter could be charged with [_______________]. He could successfully assert the defense of [________________]. A. Assault, no defense B. No crime, no defense needed. C. Assault, self-defense D. Assault, defense of others