6. The acids HC2H3O2 and HF are both weak, but HF is a stronger acid than HC2H3O2. HCl is a strong acid. Order the following according to base strength. (A) Cl- ＞ F- ＞ C2H3O2- ＞ H2O (B) C2H3O2- ＞ F- ＞ H2O ＞ Cl- (C) C2H3O2- ＞ F- ＞ Cl- ＞ H2O (D) F- ＞ C2H3O2- ＞ H2O ＞ Cl- (E) none of these