This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Gasless abdomen in X ray seen in 
Select and explain. 
A. Acute Pancreatitis, B. Intusussception, C. Ulcerative Colitis, D. Necrotising Enterocolitis
A: Acute Pancreatitis
Answer: A: Acute Pancreatitis 
Explanation: Causes of Gasless Abdomen: * Mesentric Ischemia * Midgut volvulus * Acute Pancreatitis Signs in X ray in Acute Pancreatitis:- * Colon cut off sign * Sentinel Loop * Ground glass appearance * Renal halo sign * Gasless abdomen Ref:- Surgery Sixer; Pg num:- 692