Results of Massive,continued Intervention Programs Such as the Canadian Aboriginal

Results of massive,continued intervention programs such as the Canadian Aboriginal Head Start program show that

A) long-lasting improvements in the cognitive and social-emotional scores of disadvantaged children can be achieved.
B) even with continued intervention,the improvements in disadvantaged children's intelligence are not significant from a practical standpoint.
C) improvements in the scores of disadvantaged children are only temporary.
D) continued intervention is relatively inexpensive.