This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mycology, Subject name: Microbiology
Pityriasis versicolor is caused by- 
Select and explain. 
A. E. floccosum, B. M. gypseum, C. M. furfur, D. T. tonsurans
C: M. furfur
Answer: C: M. furfur 
Explanation: Tinea Versicolor or Pityriasis Versicolor: It is a chronic recurrent condition involving stratum corneum of skin, caused by a lipophilic fungus - Malassezia furfur. Malassezia furfur is a lipophilic fungus that is found on skin. Clinical manifestation: Characterized by scaly patches of hypo to hyper pigmentation of skin * Areas rich in sebaceous glands are commonly involved (neck, chest or upper arms). E. floccosum - cause Tinea unguium M. gypseum - cause Ectothrix infection T. tonsurans and T. violaceum- cause Endothrix