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: Surgery
Retropharyngeal space infection is mainly due to
spread of 
Select and explain. 
A. Cervical tuberculosis, B. Meningo encephalitis, C. Mumps, D. Odontogenic infections
D: Odontogenic infections
Answer: D: Odontogenic infections 
Explanation: None