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: Anatomy
Brachcephaly with narrow foramen magnum is seen in: 
Select and explain. 
A. Down syndrome., B. Fanconi syndrome., C. Achondroplasia., D. Cleidocranial dysplasia.
C: Achondroplasia.
Answer: C: Achondroplasia. 
Explanation: None