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: Pharmacology
Which is the shoest acting mydriatic- 
Select and explain. 
A. Atropine, B. Tropicamide, C. Cyclopentaolate, D. Homatropine
B: Tropicamide
Answer: B: Tropicamide 
Explanation: Ans. is 'b' i.e., Tropicamide o Tropicamide has quickest and briefest action amongst the anticholinergic mydriatics. o It is unreliable cycloplegic.