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: Dental
Which strain of yeast is found in the root canal: 
Select and explain. 
A. Candida albicans, B. Cryptococcus, C. Histoplasma, D. Actinomyces
A: Candida albicans
Answer: A: Candida albicans 
Explanation: None