This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacterial Infection of Skin, Subject name: Skin
Two ulcers on the chest wall and axilla, associated with underlying sinus tracts and discharge. Diagnosis? 
Select and explain. 
A. Lupus vulgaris, B. Scrofuloderma, C. Lichen scrofulosorum, D. TBVC
B: Scrofuloderma
Answer: B: Scrofuloderma 
Explanation: Ans. B. ScrofulodermaScrofuloderma (also known as "Tuberculosis cutis colliquativa") is a skin condition caused by tuberculous involvement of the skin by direct extension, usually from underlying tuberculous lymphadenopathy.