This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pelvis and Hip Injury, Subject name: Orthopaedics
[{'content': "Telescopic test is useful to diagnose \nSelect and explain. \nA. Pehe's disease, B. Intracapsular fracture neck of femur, C. Malunited Trochanteric fracture, D. Ankylosis of hip joint", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Positive Telescopy test indicates instability of hip joint such as: old unreduced posterior dislocation, loss of neck and or head in old fractures neck femur and paralytic hip. Telescoping digits is seen in psoriatic ahritis', 'role': 'assistant'}]