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: Surgery
Cullen's sign in seen in - 
Select and explain. 
A. Acute cholecystitis, B. Acute pancreatitis, C. Acute haemorrhagic pancreatitis, D. Blunt injury abdomen
C: Acute haemorrhagic pancreatitis
Answer: C: Acute haemorrhagic pancreatitis 
Explanation: Ans. is 'c' i.e., Acute haemorrhagic pancreatitis