The correct option is B any woman except his wife
Section 497 of IPC tells about the adultery. Intercourse of a man with a wedded lady without the assent of her better half when such sex doesn't add up to assault. That is, it draws a distinction between assent given by a wedded lady without her significant other's assent and an assent given by an unmarried lady. It doesn't punish the sex of a wedded man with an unmarried lady or a widow or even a wedded lady when her significant other agrees to it.