Family a Has One Child and Family B Has Four

Multiple Choice

Family A has one child and Family B has four children. Based on findings from the U.S. National Longitudinal Survey of Youth, what can we infer about the IQs of the children in these families?

A) The oldest child in Family B will have the lowest IQ of any of the siblings.
B) The youngest child in Family B will have the lowest IQ of any of the siblings.
C) The child in Family A will have a higher IQ than any of the children in Family B.
D) There is not enough information to make any predictions about IQ in either family.