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
class III malocclusions can be seen in all except: 
Select and explain. 
A. Cleidocranial dysplasia., B. Craniofacial dysostosis., C. Pierre Robin syndrome., D. Achondroplasia.
C: Pierre Robin syndrome.
Answer: C: Pierre Robin syndrome. 
Explanation: None