This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries Around Arm & Elbow, Subject name: Orthopaedics
[{'content': "Cozen test is done for? \nSelect and explain. \nA. Little leaguer's elbow, B. Tennis elbow, C. Golfers elbow, D. Frozen shoulder", 'role': 'user'}, {'content': "Answer: B \nExplanation: ANSWER: (B) Tennis elbowREF: Apley's system 8th e p. 310-11Tennis tendinitis:Chronic tendinitis of common extensor originCozen test - active extension of wrist against resistance produces pain at point of common extensor origin.", 'role': 'assistant'}]