Suppose that researchers estimate that broad-sense heritability of IQ in Sweden is 0.8.Which of the following conclusions is valid, assuming that the estimate is accurate?

A)Most variance for IQ in Sweden is due to total genetic variance.
B)In Sweden, the environment does not play a large role in determining the IQ of individuals.
C)Enriching the environment of poor children in Sweden would not lead to a big improvement on IQ tests.
D)Broad-sense heritability of IQ in the United States probably is close to 0.8.
E)If another country has a lower broad-sense heritability for IQ, then this difference must be genetically based.