This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Integrated QBank, Subject name: Unknown
A 46-year-old male presented to the dermatology OPD with abnormal pigmentation on the trunk, the back, the abdomen, and the proximal extremities. It was noted that fine, dust like scales covered the lesion. Dermoscopy shows a well-demarcated white area with patchy and diffuse scaling found largely inskin furrows. Skin biopsy was taken. 
Select and explain. 
A. Epidermophyton, B. Trichophyton rubrum, C. Microsporum canis, D. Malassezia furfur
D: Malassezia furfur
Answer: D: Malassezia furfur 
Explanation: This is a case of Tinea versicolor. Tinea versicolor is a common, benign, superficial cutaneous fungal infection usually characterized by hypopigmented or hyperpigmented macules and patches on the chest and the back. Tinea versicolor is caused by the dimorphic, lipophilic organisms in the genus Malassezia, formerly known as Pityrosporum. The KOH mount image shows the classical spaghetti and meatball appearance. Trichophyton would show pencil shaped macroconodia with abundant microconidia Microsporum would show spindle shaped macroconodia. Epidermophyton would shows pear shaped macroconodia with no microconidia.