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
Investigation of choice to demonstrate vesicoureteral reflux is: 
Select and explain. 
A. Isotope cystogram, B. Contrast MCU, C. IVP, D. Cystoscopy
B: Contrast MCU
Answer: B: Contrast MCU 
Explanation: Ans. Contrast MCU