This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
In HIV infected patients, smear from oral lesions will show which organism - 
Select and explain. 
A. Candida, B. Cryptococcosis, C. Histoplasma, D. Trichophyton
A: Candida
Answer: A: Candida 
Explanation: Ans. is 'a' i.e., Candida * Amongst the given options, only Candida causes oral lesion in AIDS patient.* Oral lesions in AIDS include1. Hairy leukoplakia (caused by EBV)2. Thrush (caused by Candida)3. Aphthous ulcer