Which of the Following Is a Logical Inference from the Fact

Which of the following is a logical inference from the fact that a 0.10 M solution of potassium acetate,KC₂H₃O₂,is less alkaline than a 0.10 M 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.