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
Which of the following fungi is difficult to isolate on REGULAR SDA media 
Select and explain. 
A. Candida, B. Dermatophytes, C. Cryptococcus, D. Malassezia furfur
D: Malassezia furfur
Answer: D: Malassezia furfur 
Explanation: M. furfur requires fatty acids for growth and does not grow on regular Sabouraud's medium Hence is cultured on the Sabouraud's dextrose agar (SDA) overlayed with a layer of olive oil. On incubation at 37degC, the fungus produces creamy colonies or Fried egg colonies within 5-7 days. Candida, Dermatophytes, Cryptococcus can be isolated easily on SDA.