The PH of an Aqueous Sodium Fluoride (NaF) Solution Is

The pH of an aqueous sodium fluoride (NaF) solution is ________ because ________.

A) 7; sodium fluoride is a simple salt
B) above 7; fluoride is a weak base
C) below 7; fluoride reacts with water to make hydrofluoric acid
D) about 7; fluoride is a weak base, but produces hydrofluoric acid, and these two neutralize one another
E) 0; sodium fluoride is a salt, not an acid or a base