This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Regarding yaws, all are true except - \nSelect and explain. \nA. Caused by T. Peenue, B. Sexually transmitted, C. Croos active antibodies with syphilis, D. Drug of choice is penicillin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Yaws is a chronic contagious non veneral disease. Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 359', 'role': 'assistant'}]