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: Pathology
[{'content': 'What does cardiac polyp means - \nSelect and explain. \nA. Acute infarct, B. Cardiac aneurysm, C. Benign tumour, D. Fibrinous clot', 'role': 'user'}, {'content': 'Answer: D \nExplanation: . Fibrinous clot', 'role': 'assistant'}]