When Four-Year-Old Deidra Wants an Item or an Activity, She

When four-year-old Deidra wants an item or an activity, she will attack her parents with her fists until they laughingly and protestingly give her what she wants. Her parents' decision to give into Deidra's demands in this fashion

A) will eventually help her moderate and regulate her emotions by protecting her from frustration and unhappiness.
B) will be effective in teaching her prosocial behavior because their behavior will be a model for her.
C) is appropriate and understandable because unresolved conflict would not be an effective parenting strategy.
D) will reinforce her behavior and possibly create a long-lasting pattern of aggression and defiance.