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': 'A patient, Harish came to the emergency after receiving penicillin injection. He was diagnosed to have anaphylactic shock. Which of the following is the only life saving measure to treat him ? \nSelect and explain. \nA. Intravenous hydrocortisone hemisuccinate, B. Intravenous adrenaline hydrochloride, C. Intramuscular adrenaline hydrochloride, D. Intravenous glucose saline', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]