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: Pharmacology
[{'content': 'The drug of choice in the management of life threatening allergic reaction is: \nSelect and explain. \nA. Corticosteroids, B. Antihistamines, C. Adrenalin, D. Diazepam', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]