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
The "Distant metastasis" of bone can be best detected by: 
Select and explain. 
A. NMI, B. Bone scan, C. CT, D. Intravenous venogram
B: Bone scan
Answer: B: Bone scan 
Explanation: Bone scan