Literature Reviews of Early Childhood Intervention and Education Programs Have

Literature reviews of early childhood intervention and education programs have reached all of the following conclusions except

A) there are often few lasting effects in any domain of development
B) programs that do not continue as children make the transition to school have limited long-term effects
C) positive effects tend to be especially pronounced for lower income children whose parents have lower levels of education
D) have few direct and lasting effects on measures of IQ