This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Which of the following is a mydriatic drug with longest duration of action \nSelect and explain. \nA. Cyclopentolate, B. Tropicamide, C. Homatropine, D. Atropine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref: HL Sharma 3rd ed: Pg no:152 Tropicamide is the shoest acting, so very commonly used for fundoscopy atropine is the longest acting - acts for 1 week not commonly used for adults, used only for children for fundoscopy - 1% atropine ointment', 'role': 'assistant'}]