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': 'For which malignancy, intensity Modulated Radiotherapy (IMRT) is the most suitable – \nSelect and explain. \nA. Lung, B. Prostate, C. Leukemias, D. Stomach', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Currently, IMRT is being used most extensively to treat cancers of the prostate, head & neck, and CNS.\nNote:- IMRT has also been used in lung cancers, but only in limited situations', 'role': 'assistant'}]