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
An HIV infected patient is showing following oral lesions. The causative organism is- 
Select and explain. 
A. EBV, B. Candida, C. CMV, D. P carinii
B: Candida
Answer: B: Candida 
Explanation: Ans. is 'b' i.e., Candida* This is typical picture of oral thrush, i.e. white patches in an HIV infected patient. It is caused by Candida.