This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacterial infections, Subject name: Dental
[{'content': 'Tuberculosis of skin is called as \nSelect and explain. \nA. Lupus profundis, B. Scrofuloderma, C. Lupus vulgaris, D. Lupus pernio', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Lupus vulgaris is the primary infection of skin with mycobacterium tuberculosis due to hematogenous spread to skin from a internal focus scrofuloderma is a form of tuberculosis of lymph node or bone they contiguiosly spread to skin as an extension lupus profundus is a variant of lupus erythematosus that effects the subcutaneou fat characterised by nodules plaques and ulceration. lupus period is a form of cutaneous sarcoidosis characterised by bluish red violaceous nodules and plaques over nose cheeks and ears iadvl textbook of dermatology page page 243', 'role': 'assistant'}]