Men vs Women - Domestic Violence

What is acceptable in the following scenario...


Woman hits a man attempting to cause physical pain but doesn't due to strength
Man hits woman back causing physical pain due to more strength


Viewpoint A
Woman is guilty of assault
Man is guilty of assault
Punishment of both woman and man is carried out based on the amount of physical damage.


Viewpoint B
Woman didn't cause any physical pain so it is not assault.
Man is guilty of assault
Punishment is only for the male.


Viewpoint C
Woman is guilty of assault
Man is guilty of assault
Punishment should be the same


What viewpoint is most acceptable?...