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: Skin
[{'content': 'Ring worm fungi live in \nSelect and explain. \nA. Stratum Corneum, B. Dermis, C. Prickle Cell layer, D. Basal Cell layer', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Stratum corneum Dermatophytosis is caused by trichophyton, epidermophyton & microsporumQ; and it infects superficial topmost layer of skin (stratum corneum or keratin layer), hair and nailsQ. Cutaneous mycosis (Tenia or Ring worm or Dermatophytosis) infect stratum corneum, hair & nailsQ and do not penetrate living tissues.', 'role': 'assistant'}]