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: Radiology
[{'content': 'Intracavitary radiation is given in: \nSelect and explain. \nA. Carcinoma of the cervix, B. Carcinoma of the lung, C. Carcinoma of the oesophagus, D. Carcinoma of the oral cavity', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Carcinoma of the cervix', 'role': 'assistant'}]