Which one of the following is true about oral hairy leukoplakia.. Associated with HIV virus infection and is commonly seen on the lateral side of the tongue

Which one of the following is true about oral hairy leukoplakia:

1. Associated with HIV virus infection and is commonly seen on the dorsal of the tongue

2. Associated with HIV virus infection and is commonly seen on the lateral side of the tongue***

3. Usually caused by Candida species

4. Always associated with trauma to the lateral side of the tongue

5. Always associated with pernicious anemia

Tyldesley's Oral Medicine 5Ed 2003, Page 46