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': 'Migratory thrombophlebitis is seen in - \nSelect and explain. \nA. Dissaminated cancer, B. Rheumatic heart disease, C. Libman - sacks endocarditis, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]