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': 'Distribution of functional renal tissue is seen by – \nSelect and explain. \nA. DMSA, B. DTPA, C. MAG3 – Tc99, D. 1123 iodocholesterol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Static renal scintigraphy (Tc-99 DMSA) can be used to locate functional renal mass.', 'role': 'assistant'}]