This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Which of the following is the most common fungal infection in immunocompetent patient - 
Select and explain. 
A. Candida, B. Aspergillus, C. Cryptococcus, D. Penicillium
A: Candida
Answer: A: Candida 
Explanation: None