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
Most sensitive test for metastatic deposit is: 
Select and explain. 
A. Isotope scan, B. CT scan, C. Skeletal survey, D. Tomography
A: Isotope scan
Answer: A: Isotope scan 
Explanation: Ans. Isotope scan