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': 'Tennis elbow is - \nSelect and explain. \nA. Medial Epicondylitis, B. Lateral Epicondylitis, C. Ulnar collateral ligament injury, D. Radial head subluxation', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Lateral Epicondylitis o Repeat from previous sessions.", 'role': 'assistant'}]