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
Shoest acting mydriatic is ? 
Select and explain. 
A. Atropine, B. Homatropine, C. Tropicamide, D. Cyclopentolate
C: Tropicamide
Answer: C: Tropicamide 
Explanation: Ans. is 'c' i.e., Tropicamide