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 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: 1. Candida is the most common fungal infection in immunocompetent person as well as oppounistic infection in immunocompromised person. 2. Predisposing factors that are associated with increased risk of infection with Candida include - Physiological state: Extremes of age (infancy, old age), pregnancy. Low immunity: Patients on steroid or immunosuppressive drugs, post transplantation, malignancy, HIV. Patients on broad spectrum antibiotics that suppress the normal flora Diabetes mellitus, febrile neutropenia and zinc or iron deficiency. Aspergillus,Cryptococcus,Penicillium are also oppounistic infections but less common than candida