Which of the Following Yields a Buffer Solution When Equal

Multiple Choice

Which of the following yields a buffer solution when equal volumes of the two solutions are mixed

A) 0.10M HCl and 0.10 M NaCl
B) 0.15 M HNO₃ and 0.15 M NaNO₃
C) 0.10M HF and 0.10M NaF
D) 0.10M HClO₄ and 0.10 NaClO₄
E) 0.15M HBr and 0.15M NaBr