The Authors Indicate That Economic Class and Functional Illiteracy Are

The authors indicate that economic class and functional illiteracy are related. An important causal factor for this relationship suggested in the text is that

A) students from lower socioeconomic groups lack parental support for education.
B) students from middle- and upper-class families value education more than do students from lower-class families.
C) different socioeconomic groups have different degrees of access to educational resources.
D) All of these answers are correct.