This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
The minimum incidence of cleft palate is seen in which of the following: 
Select and explain. 
A. Mongoloid, B. Afghans, C. Negroes, D. South Americans
C: Negroes
Answer: C: Negroes 
Explanation: None