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
'Pityriasis versicolor' is caused by: 
Select and explain. 
A. Malassezia furfur, B. Trichophyton rubrum, C. Aspergillus fumigatus, D. Nocardia versicolor
A: Malassezia furfur
Answer: A: Malassezia furfur 
Explanation: Ans. A. Malassezia furfurPitvriasis versicolora. Caused by Malassezia furfurb. Involves epidermisc. Most common site is upper part of the trunkd. Wood's light is useful for diagnosis