This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fungal Infection, Subject name: Skin
[{'content': "Which of the following tests is used in the diagnosis of Tinea faciei? \nSelect and explain. \nA. Gram's stain, B. KOH mount, C. Tissue smear, D. Wood's lamp", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. KOH mountTinea faciei is the dermatophyte infection of the face and is diagnosed by KOH smear.* Tinea faciei is an infection of the glabrous skin of the face with a dermatophyte fungus (the mustache and beard areas of the adult male are excluded).* Trichophyton mentagrophytes and T. Rubrum predominate, but T. Tonsurans, M. audouinii, and M. canis are also common causes of Tinea faciei.Tinea faciei', 'role': 'assistant'}]