This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, 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: Thrombolytics like streptokinase, alteplase, reteplase are beneficial to patients with ST-elevated MI Max. benefit will be seen if they were given with 6 hours of the onset of MI Their use in ST depressed MI is contraindicated', 'role': 'assistant'}]