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: Dental
[{'content': "Which of the following is not included in the triad of Reiter's syndrome – \nSelect and explain. \nA. Conjuctivitis, B. Urethritis, C. Arthritis, D. Keratoderma blenorrhagica", 'role': 'user'}, {'content': "Answer: D \nExplanation: Classical triad of Reiter's syndrome is reactive arthritis, conjuctivitis and urethritis. Keratoderma blenorrhagica occurs, but it is not included in triad of Reiter's syndrome.", 'role': 'assistant'}]