What Was the North Carolina "Curtain Rule" Regarding Police Response

What was the North Carolina "curtain rule" regarding police response to domestic violence calls?

A) If there was probable cause to show that violence or threats of violence occurred, it was mandated that police make an arrest
B) If there was little supporting evidence or no corroborating witnesses to determine whether an act of domestic violence had occurred, police could arrest both parties
C) If there was no permanent injury, malice, cruelty, or dangerous violence shown by the husband, it was deemed prudent to leave the parties alone
D) If there were children present during a domestic violence incident, police were mandated to remove the children from the home