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
Beheaded Scottish terrier sign is? 
Select and explain. 
A. Spondylosis, B. Spondylolisthesis, C. Lumbar canal stenosis, D. Slipped Disc
B: Spondylolisthesis
Answer: B: Spondylolisthesis 
Explanation: B i.e. Spondylolisthesis