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
Radiological sign of ischemic colitis is 
Select and explain. 
A. Popcorn appearance, B. Thumb print apperance, C. Cobrahead app, D. Inveed 3 sign
B: Thumb print apperance
Answer: B: Thumb print apperance 
Explanation: B i.e. Thumb printing