Which of the following bacterial products have been implicated in the initiation of inflammatory periodontal disease?
1. Protease.
2. Hyaluronidase.
3. Neuraminidase.
4. Endotoxin.
5. Desxyribonuclease

(1) (2) (4)

(1) and (2)

(2) (3) (4)

(2) (3) (5)

(3) (4) (5)