With Regard to Cross-Cultural Research in Social Psychology, Which of the Following

With regard to cross-cultural research in social psychology, which of the following is NOT true?

A) Social psychologists find cross-cultural studies of social behavior valuable because these provide a test of the universality of laws of human behavior.
B) Social psychologists have only recently expanded their research beyond the United States.
C) Social psychologists find cross-cultural studies of social behavior valuable because these allow the use of research methods deemed unethical in the United States.
D) Social psychologists find cross-cultural studies of social behavior valuable because these allow the discovery of additional variables that enable more accurate prediction.