This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'Which organism causes the following disease? \nSelect and explain. \nA. C. diphtheria, B. C. minutissium, C. C. ulcerans, D. C. vaginale', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Erythrasma:Erythrasma, a localized infection of the stratum corneum usually affecting the axilla and groin, is caused by Corynebacterium minutissimum. This is a lipophilic Corynebacterium and can be grown readily in media containing 20% fetal calf serum. Ref: Ananthanarayan 9th edition, p635-639', 'role': 'assistant'}]