This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Most common cranial nerve involved in CSOM is - 
Select and explain. 
A. V, B. VII, C. IX, D. XI
B: VII
Answer: B: VII 
Explanation: Ans. is 'b' i.e., VII Complications of otitis mediaa. Extracranial complicationsb. Intracranial complicationso Mastoiditiso Petrositis/Gradenigo syndromeo Facial paralysiso Labyrinthitiso Osteomyelitis of temporal boneo Septicaemia or pyaemiao Meningitiso Extradural abscesso Subdural abscesso Otogenic Brain Abscesso Lateral sinus thrombophlebitiso Otitic hydrocephalus