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
Delayed eruption of teeth occurs in 
Select and explain. 
A. Craniofacial dysostosis, B. Hyperthyroidism, C. Cleidocranial dysostosis, D. Osteitis deformans
C: Cleidocranial dysostosis
Answer: C: Cleidocranial dysostosis 
Explanation: None