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: Pathology
The most common congenital defect of the face and jaws is 
Select and explain. 
A. Macrostomia, B. Fetal alcohol syndrome, C. Cleft lip and palate, D. Ectodermal dysplasia
C: Cleft lip and palate
Answer: C: Cleft lip and palate 
Explanation: None