With Regard to the Effects of Families on Children's Educational

With regard to the effects of families on children's educational outcomes,which of the following is true?

A) Few studies show that birth order significantly affects children's educational attainment.
B) Children born later in a family are less likely to receive parental financial support for college because parents have exhausted their resources on the older children.
C) When a family goes from two to three children,middle children are significantly more affected by the loss of family resources.
D) Only children are an at-risk group when it comes to educational attainment.