This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
Ptosis results from trauma to which nerve - 
Select and explain. 
A. VII, B. VIII, C. III, D. VI
C: III
Answer: C: III 
Explanation: Oculomotor nerve injury causes paralysis of levator palpebrae superioris. In ptosis lid covers more than 2mm of cornea. Ref :Ak khurana 6th edition