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
The mydriatic drug with a short duration of action is: 
Select and explain. 
A. Cyclopentolate, B. Tropicamide, C. Homatropine, D. Atropine
B: Tropicamide
Answer: B: Tropicamide 
Explanation: None