This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Radiology
Best investigation for detection of stress fracture is? 
Select and explain. 
A. X-ray, B. CT scan, C. Bone scan, D. MRI
D: MRI
Answer: D: MRI 
Explanation: Ans DBoth MRI and Bone scan can identify stress fracture but MRI has better image resolution and can also rule out many similar disorders and hence is considered better.