Which Combination Would Make a Buffer Solution

Multiple Choice

Which combination would make a buffer solution?

A) 0.1 M HCl and 0.1 M NaCl
B) 0.1 M H₂CO₃ and 0.1 M NaHCO₃
C) 0.4 M HNO₃ and 0.4 M NaNO₃
D) 0.15 M H₂SO₄ and 0.4 M CaSO₄