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': 'The following ADR is caused by \nSelect and explain. \nA. Pilocarpine, B. Apraclonidine, C. Brimonidine, D. Latanoprost', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The picture is showing lid retraction which is an ADR of apraclonidine. It is an analogue of clonidine. Ref: KDT 6th ed pg 146-147', 'role': 'assistant'}]