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
Micturating cystourethrogram is not used in: 
Select and explain. 
A. Renal tumours, B. Hydronephrosis, C. Urinary obstruction, D. Recurrent UTI
A: Renal tumours
Answer: A: Renal tumours 
Explanation: Ans. Renal tumours