This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Drug of choice for treatment of Acute attack of primary Angle Closure glaucoma is 
Select and explain. 
A. Mannitol, B. Latanoprost, C. Pilocarpine, D. Acetazolamide
C: Pilocarpine
Answer: C: Pilocarpine 
Explanation: None