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
Which organism causes the following disease? 
Select and explain. 
A. C. diphtheria, B. C. minutissium, C. C. ulcerans, D. C. vaginale
B: C. minutissium
Answer: B: C. minutissium 
Explanation: 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