When intentional homicide is reduced to manslaughter

A person who intentionally causes the death of another person by unlawful harm shall be deemed to be guilty only of manslaughter, and not of murder, if there is such evidence as raises a reasonable doubt as to whether– (a) he was deprived of the power of self-control by such extreme provocation given by the other person as is mentioned in section 120 of this Act; or (b) he was justified in causing some harm to the other person, and that in causing harm in excess of the harm which he was justified in causing he acted from such terror of immediate death or grievous harm as in fact 91 deprived him, for the time being, of the power of self-control; or (c) in causing the death he acted in the belief, in good faith and on reasonable grounds, that he was under a legal duty to cause the death or to do the act which he did; or (d) in the case of a woman who causes the death of her child recently born, she (while not insane) was deprived of the power of self- control by a disease or disorder of mind produced by childbearing.