Which of the Following Is a Logical Inference from the Fact

Multiple Choice

Which of the following is a logical inference from the fact that a 0.10 molar solution of potassium acetate, KC₂H₃O₂, is less alkaline than a 0.10 molar solution of potassium cyanide, KCN?

A) Hydrocyanic acid is a weaker acid than acetic acid.
B) Cyanides are less soluble than acetates.
C) Hydrocyanic acid is less soluble in water than acetic acid.
D) Acetic acid is a weaker acid than hydrocyanic acid.
E) 0.10 M potassium acetate is more concentrated than 0.10 M potassium cyanide.