According to Herrnstein and Murray's book, The Bell Curve,
A) IQ variations are largely determined by environmental differences.
B) ethnic and social class differences in IQ are unfounded.
C) the relative role of heredity and environment in the black-white IQ gap remains unsolved.
D) heredity plays a sizable role in the black-white IQ gap.

Question

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Heredity plays a sizable role in the black-white IQ gap, according to Herrnstein and Murray's book, The Bell Curve.

According to Herrnstein and Murray's Book, the Bell Curve