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
[{'content': 'Position of limb in posterior dislocation of hip ? \nSelect and explain. \nA. Flexion, abduction & external rotation, B. Flexion, adduction & internal rotation, C. Flexion, adduction & external rotation, D. Flexion, abduction & internal rotation', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Flexion, adduction & internal rotation", 'role': 'assistant'}]