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
The most dangerous type of spread of infection from apical abscess is, to: 
Select and explain. 
A. Infratemporal fossa, B. Pterygoid, C. Parapharyngeal space, D. Submandibular space
C: Parapharyngeal space
Answer: C: Parapharyngeal space 
Explanation: None