This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Pathology
[{'content': 'Carcinosarcoma occurs in \nSelect and explain. \nA. Uterus, B. Liver, C. Breast, D. Lungs', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Carcinosarcoma is the rare combination of malignant tumour of the epithelium (carcinoma) and of mesenchymal tissue (sarcoma) such as in thyroid, lung, and uterus. Refer robbins 9/e', 'role': 'assistant'}]