Which of the Following Are True Concerning Fluoride and Bacterial

Multiple Choice

Which of the following are true concerning fluoride and bacterial inhibition?
1) The fluoride ion freely crosses the bacterial cell wall.
2) Some of the fluoride present in plaque fluid combines with the hydrogen ion of the acid to become hydrofluoric acid.
3) Hydrofluoric acid diffuses into the cell.
4) Once in the acid cytoplasm of the cell,the hydrofluoric acid separates into the fluoride ion and the hydrogen ion.

A) 1,2,3,4
B) 1,2,3
C) 2,3
D) 1,4