This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acoustic Neuroma, Subject name: ENT
[{'content': 'True about CP angle tumour: \nSelect and explain. \nA. Absent corneal reflex, B. Superior oblique palsy, C. Pupillary dilatation, D. Medial rectus palsy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (a) Absent corneal reflex(Ref. Cummings, 6th ed., 2750)Involvement of 3rd and 4th cranial nerve causing pupillary dilatation and medial rectus and superior oblique palsy is not described in Acoustic neuroma.', 'role': 'assistant'}]