Which of the Following Is a Difference Between Later-Born Children

Which of the following is a difference between later-born children and firstborn children?

A) Later-born children are more highly motivated to achieve than firstborn children.
B) Later-born children perform better academically and are more cooperative than firstborn children.
C) Later-born children show somewhat greater anxiety levels than firstborn children.
D) Later-born children are more rebellious and liberal than firstborn children.