This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
Frey's syndrome is associated with 
Select and explain. 
A. Sympathetic fibres of auriculo temporal nerve, B. Parasympahetic fibres of trigeminal nerve, C. Parasympathetic fibres of auriculo temporal nerve, D. Motor fibres of facial nerve
C: Parasympathetic fibres of auriculo temporal nerve
Answer: C: Parasympathetic fibres of auriculo temporal nerve 
Explanation: Vishram singh textbook of clinical neuroanatomy 2nd edition. * This syndrome occurs following auriculotemporal nerve injury. As a result there is aberrant innervation of sweat glands by parasympathetic secretomotor fibres.