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
Distribution of functional renal tissue is seen by 
Select and explain. 
A. DMSA, B. DTPA, C. MAG3 - Tc 99, D. 1123 iodocholesterol
A: DMSA
Answer: A: DMSA 
Explanation: A. i.e. DMSA