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: Anaesthesia
[{'content': 'Which of the following drug can be given intravenously, epidurally or by transdermal route – \nSelect and explain. \nA. Fentanyl, B. Thiopental, C. Succinylcholine, D. Vecuronium', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Fentanyl can be given by IM, IV, transmucosal, transdermal (fentanyl patch), intrathecal and epidural routes.', 'role': 'assistant'}]