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  is the most suitable \nSelect and explain. \nA. Lung, B. Prostate, C. Leukemias, D. Stomach', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The prostate is a walnut-sized gland located between the bladder and the penis. The prostate is just in front of the rectum.\nThe urethra runs through the center of the prostate, from the bladder to the penis, letting urine flow out of the body.\nThe prostate secretes a fluid that nourishes and protects sperm.\nDuring ejaculation, the prostate squeezes this fluid into the urethra, and it’s expelled with sperm as semen.', 'role': 'assistant'}]