Which Example of Behaviour in a Family System Demonstrates Double-Bind

Which example of behaviour in a family system demonstrates double-bind communication?

A) A mother tells her daughter, "You make me so mad that sometimes I wish I had never had you."
B) A teenager tells her father, "You are treating me like a baby when you tell me I must be home by 10 p.m. on a school night."
C) A son tells his mother, "You worry too much about what might happen. Nothing has happened yet, so why worry?"
D) A wife tells her husband, "You go ahead with your bowling trip. Try not to worry about me falling on my crutches while I'm alone at home."