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: Orthopaedics
[{'content': '66 year old female after tall developed pain while walking and shortening and external rotation of limb with broadening of trachanter is present. the possible diagnosis \nSelect and explain. \nA. Fracture neck femur, B. Fracture intertrochanteric femur, C. Acetabular fracture, D. Central dislocation  of Hip', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]