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
Which of the following is a mydriatic drug with longest duration of action 
Select and explain. 
A. Cyclopentolate, B. Tropicamide, C. Homatropine, D. Atropine
D: Atropine
Answer: D: Atropine 
Explanation: 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