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
True about CP angle tumour: 
Select and explain. 
A. Absent corneal reflex, B. Superior oblique palsy, C. Pupillary dilatation, D. Medial rectus palsy
A: Absent corneal reflex
Answer: A: Absent corneal reflex 
Explanation: (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.