The pH of a solution of NH4C2H3O2 is approximately 7. The best explanation is:
A) All salts of weak acids and weak bases are neutral.
B) This salt does not react with water.
C) Aqueous ammonia and acetic acid have approximately equal ionization constants.
D) The salt is a product of a strong acid and a strong base.
E) Ammonium acetate is a weak electrolyte.