Psychologists Working in the Military During World War I Found

Psychologists working in the military during World War I found correlations between intelligence tests and social class and race. They used this finding to argue

A) that these findings provided a scientific basis for making individual comparisons between ethnic and racial groups.
B) for restrictive immigration legislation in the 1920's.
C) for sterilization for the "mentally defective" to protect society.
D) all of the above.