Answer
B, A.
Work Step by Step
The dissociation of D and F won't change the pH, since they don't produce hydronium or hydroxide, for the others, all dissociations produce one mole of hydroxide ion per mole of salt.
From that, we conclude that the highest pH will come from the solution with the lowest anion Kb, which is B, and the lowest pH will come from the solution with the highest anion Kb, which is A.
