Which of the Following Statements About Racial Differences in IQ

Multiple Choice

Which of the following statements about racial differences in IQ is false?

A) The variability within any given race tends to be much smaller than the variability between races.
B) Differences among races may be narrowing over the decades.
C) Racial differences are largely or entirely environmental in origin.
D) When matched for socioeconomic,demographic,and health variables,there are no racial differences.