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 man presents with chest pain. ECG shows ST segment depression in leads V1–V4. Which of the following should not be given ? \nSelect and explain. \nA. Beta blocker, B. Thrombolytic, C. Morphine, D. Aspirin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]