This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mycobacterial Infections, Subject name: Dental
[{'content': 'Most common type of tuberculid? \nSelect and explain. \nA. Lichen Scrofulosum, B. Military TB, C. Papulonecrotic type, D. Lupus vulgaris', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Papulonecrotic Tuberculids Most common tuberculid A chronic, recurrent, and symmetric eruption of necrotizing skin papules arising in crops, involving primarily the arms and the legs. A hallmark of this condition is that lesions heal with varioliform scarring. The eruption is believed to represent a hypersensitivity reaction to TB antigens released from a distant focus of infection. Most common type of skin TB = Lupus vulgaris. Most common type of Tuberculid = Papulonecrotic.', 'role': 'assistant'}]