Gino Is 3 Years Old and His Mother Just Gave

Gino is 3 years old and his mother just gave birth to another child.Just recently Gino has become increasingly aggressive toward the baby,and increasingly whiny,demanding,and disobedient.To help the situation,Gino's mother should ____.

A) use positive and negative punishment to condition Gino's negative behaviors
B) explain the feelings and needs of the baby to him
C) separate Gino from the baby for a time of 2 weeks as a means to buffer the negative feelings
D) take Gino to see a child psychologist because his behaviors are extremely rare and disturbing