The pH of 0.50 mol dm^-3 solutions of HCI, H₂SO₄ and CH₃COOH were measured. which of the following statements about the values obtained is correct?

• A the pH value was equal to 5 in each case
• B the pH values of the HCI and H₂SO₄ solutions were equal
• C their pH values added uo to 14
• D the pH value of the CH₃COOH was the highest.