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
Most common oral manifestation of HIV infection is 
Select and explain. 
A. Oral hyperpigmentation, B. Oral hairy leukoplakia, C. Oral candidiasis, D. Bacillary angiomatosis
C: Oral candidiasis
Answer: C: Oral candidiasis 
Explanation: None