This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Ainhum is seen in \nSelect and explain. \nA. Base of great toe, B. Base of fingers tips, C. Base of toe, D. Ankle', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ainhum : is a condition usually affecting Negro males (but some females) who have run barefoot in child hood.\nClinical Features : A fissure appears at interphalangeal joint of toe -usually the fifth. This fissure becomes a fibrous band, encircles the digit and causes necrosis.', 'role': 'assistant'}]