When Siblings Play Together, the Older Child Typically Dominates the Younger.What

When siblings play together, the older child typically dominates the younger.What outcome does this asymmetrical relationship have on the teacher-learner relationship in sibling interactions?

A) some positive outcomes to both, because the older child gains from playing teacher and the younger child gains from being a learner
B) some positive outcomes to the older child who gains from playing teacher, but none for the younger
C) primarily negative outcomes for the older child, but some gains for the younger child as learner
D) primarily negative outcomes for the younger child as learner, because older children typically use bullying tactics