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
[{'content': 'Positive Kehr&;s sign is \nSelect and explain. \nA. Haemopeionium, B. Acute cholecystitis, C. Acute pancreatitis, D. Amoebic abscess', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Collection of clot under the left diaphragm irritate it and the phrenic nerve causing referred pain to the left shoulder - Kehr&;s sign and there may be associated left-sided fracture of ribs resulting in hemithorax or haemoperitoneum. SRB 5 th edition page no. 670', 'role': 'assistant'}]