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': 'Ultrasound and radionuclids studies are primary imaging modalities used for assessment of - \nSelect and explain. \nA. Renal trauma, B. Renovascular hypertension, C. Renal tuberculosis, D. Renal transplant', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]