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: Medicine
[{'content': '. Most common cause of Carcinomatous meningitis - \nSelect and explain. \nA. Carcinoma breast, B. Carcinoma lung, C. Carcinoma gut, D. Malignant melanoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Carcinoma breastCarcinoma breast in the most common cause of carcinomatous meningites.', 'role': 'assistant'}]