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: Surgery
Renal function failure is best evaluated by? 
Select and explain. 
A. DTPA, B. DMSA, C. Iodohippurate, D. All
D: All
Answer: D: All 
Explanation: Ans. All options are correct i.e., 'a, b, c