As Infants Grow Older, Their Relationships with Siblings Develop and Become

As infants grow older, their relationships with siblings develop and become more complicated. All but which of the following are ways in which these relationships change?

A) Older siblings become a source of comfort and care for the younger sibling when they are upset or distressed.
B) Older siblings serve as teachers for young siblings, teaching them how to play games or to cook simple foods.
C) Older children who do well in school and with peers serve as a model to young siblings, who often follow suit.
D) Older children are essential in facilitating communication between the younger sibling and the parents, often interpreting "baby talk" and poorly-enunciated words for the parents to understand.