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
[{'content': 'Erythrasma is caused by: \nSelect and explain. \nA. Cornybacterium, B. Staph, C. Streptococci, D. Viruses', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. a (Comybacterium)(Ref. Harrison, Principle of Medicine, 18th/918, 1181)ERYTHRASMA# It is caused by Cornybacterium minutissimum.# It is a chronic superficial bacterial infection of skin involving the body folds and toe, webs, sometimes becoming generalized and characterized by presence of sharply demarcated, dry, brown slightly scaly and slowly spreading patches.# It produces 'Coral-red' color on wood's lamp examination.", 'role': 'assistant'}]