Sonia has aqueous solutions of three salts, sodium acetate, sodium chloride and ammonium chloride in three test tubes. The test tubes are not labeled. On checking, she finds the pH of the solutions to be 4.6, 7.0 and 8.9.
Which of the following correctly matches the salts with their respective pH?
| pH 4.6 | pH 7.0 | pH 8.9 |
| A | sodium acetate | sodium chloride | ammonium chloride |
| B | sodium chloride | ammonium chloride | sodium acetate |
| C | ammonium chloride | sodium acetate | sodium chloride |
| D | ammonium chloride | sodium chloride | sodium acetate |
(a) A
(b) B
(c) C
(d) D