This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Elbow injuries, Subject name: Orthopaedics
[{'content': 'Tennis elbow is \nSelect and explain. \nA. Inflammation of lateral epicondyle of humerus, B. Inflammation of medial epicondyle of humerus, C. Avulsion injury of head of radius, D. Avulsion injury of olecranon process', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Tennis elbow is a condition characterised by pain and tenderness at the lateral epicondyle of the humerus due to non-specific inflammation at the origin of the extensor muscles of the forearm.Maheswari 5th edition Pg: 302', 'role': 'assistant'}]