Which of the Following Is a True Statement

Which of the following is a true statement?

A) Scientists quickly took Comte de Buffon search for the environmental variables responsible for human biological diversity.
B) By the end of the 18^th century, the folk belief of races became legitimate scientific facts.
C) By the end of the 18^th century, the search for archetypes was rejected.
D) By the end of the 18^th century, scientists rejected the folk beliefs of racial differences.