'A' Prosecutes 'B' for adultery with 'C', wife of 'A'. 'B' contested by denying the allegation. 'B' was found guilty and convicted in said case. Subsequently, 'C' was prosecuted on charge of bigamy on allegations that she had married 'B' during subsistence of her marriage with 'A'. 'C' contested by denying that she was ever married to 'A'. In the case against 'C', the judgment in the first case against 'B' is