Which of the Following Theorists Believed That Racial Superiority Was

Multiple Choice

Which of the following theorists believed that racial superiority was reflected in intelligence? I think this statement is too strong. The book talks states that the authors claimed: " There are clear racial and ethnic differences in intelligence. It is likely, though not certain, that at least some of this difference between
Groups is due to genetic factors." I do not see the leap between those statements and "racial superiority"

A) Wechsler
B) Hernstein and Murray
C) Binet
D) Flynn