Which of the following are correct?

Options

A. pH of 0.1M HF is more than that of 0.1M HCI
B. pH of pure water is greater than that of 0.1 MHCI
C. pH of water at `25^(@)`C is greater than that at `30^(@)`C
D. pH of water is 7 at any temperature

Answer

A, B, C