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
Agent used for dilatation of pupil in children is 
Select and explain. 
A. Atropine, B. Homatropine, C. Tropicamide, D. Phenylephrine
A: Atropine
Answer: A: Atropine 
Explanation: A i.e. Atropine