Which of the Following Solutions Would Show the Greatest Change

Multiple Choice

Which of the following solutions would show the greatest change in pH upon the addition of 10.0 mL of 1.0 M NaOH to 1.0 L of the solution?

A) 0.50 M HC₂H₃O₂
B) 0.50 M HC₂H₃O₂ + 0.50 M NaC₂H₃O₂
C) 0.10 M HC₂H₃O₂ + 0.10 M NaC₂H₃O₂
D) 0.10 M HC₂H₃O₂
E) 0.50 M NaC₂H₃O₂