What Does the Surviving Horatius Brother Do When He Returns

What does the surviving Horatius brother do when he returns from the battle against the Curiatii?

A) Kill his sister, who was mourning the death of one of the Curiatii
B) Name himself dictator for life
C) Pledge never again to pick up a weapon against any of Rome's neighbors
D) Bury his parents, who died of grief for his two slain brothers