The defendant discovered that his friend had hit and killed a pedestrian while driving that afternoon, and that he had fled from the scene of the crime before the police arrived. to keep his friend out of trouble, the defendant fixed all the dents in the car caused by the collision and had the vehicle painted a different color. the friend, distraught about hitting and killing someone, eventually turned himself in and told the police what he had done and what the defendant had done for him. the defendant was charged as an accomplice to vehicular manslaughter in a state that follows the modern trend regarding accomplice liability. how should the defendant be found? a not guilty, because he only his friend after the crime was already committed. b not guilty, because he had no affirmative duty to the victim. c guilty, because he aided his friend in the crime. d guilty, because as a party to the crime, he is criminally responsible for all crimes committed by his co-felons.