In the Past, Astrid's Daughter Often Would Jump on the Couch.Sometimes

In the past, Astrid's daughter often would jump on the couch.Sometimes Astrid said nothing, but other times she would sternly send her daughter to her room for her misbehaviour.Astrid now complains that her daughter won't stop jumping on the couch, and she asks you for your advice as to why her daughter won't behave.What would be your response in terms of the effectiveness of her punishment?

A) Time out is too mild to use as a punishment technique.
B) Astrid is typically very warm and nurturing, and therefore her daughter probably does not view her as someone to fear.
C) Astrid did not punish consistently whenever the misbehaviour occurred.
D) The punishment was administered immediately instead of waiting until both the parents could confront the child together.