This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'The commonest focus of scrofuloderma is \nSelect and explain. \nA. Lung, B. Lymph nodes, C. Larynx, D. Skin', 'role': 'user'}, {'content': "Answer: D \nExplanation: Scrofuloderma is a skin condition caused by tuberculosis involvement of the skin by direct extension, usually from underlying tuberculous lymphadenitis. Ref: Textbook of microbiology; Ananthanarayan and paniker's; 10th edition; Pg: 367", 'role': 'assistant'}]