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': 'All of the following statement about &;yaws&; are true, except - \nSelect and explain. \nA. Caused by Treponema peenue, B. Transmitted non venerally, C. Secondary yaws can involve bone, D. Late stages of yaws involve hea and nerves', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Late stages of yaws includes destructive lesions of the skin and bone. Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 359', 'role': 'assistant'}]