A friend knew that a man and a woman cared deeply for each other and encouraged the man to ask the woman to marry. Unbeknownst to the friend, the man was already married. Finally, after continued encouragement by the friend, the man went through a marriage ceremony with the woman, and the friend was the man's best man at the ceremony. If the friend is charged with being an accomplice to bigamy, should he be found guilty? A Yes, because he encouraged the man, and his mistake as to the existence of a prior marriage is no defense to a charge of bigamy. B Yes, because he was present when the crime occurred and is thus a principal in the second degree. C No, because he did not have the mental state required for accomplice liability. D No, because his encouragement and assistance was not the legal cause of the crime