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
IVP should be cautiously performed in: 
Select and explain. 
A. Multiple myeloma, B. Bone secondaries, C. Neuroblastoma, D. Leukemia
A: Multiple myeloma
Answer: A: Multiple myeloma 
Explanation: Ans. Multiple myeloma