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
Grey Turner's sign (flank discoloration) is seen in 
Select and explain. 
A. Acute pylonephritis, B. Acute cholecystisis, C. Acute pancreatitis, D. Acute peritonitis
C: Acute pancreatitis
Answer: C: Acute pancreatitis 
Explanation: Sign seen due to enzyme seep across etroperitoneum causing hemorrhagic spots and ecchymosis in the flanks SRB,5th,683.