Which Combination of Solutions Is the Best Choice for Making

Multiple Choice

Which combination of solutions is the best choice for making a buffer solution?

A) equal volumes of 1 M ammonia (NH₃) and 0.001 M ammonium chloride (NH₄Cl)
B) equal volumes of 0.5 M hydrochloric acid (HCl) and 0.5 M sodium hydroxide (NaOH)
C) equal volumes of 0.5 M hydrochloric acid (HCl) and 0.5 M sodium chloride (NaCl)
D) equal volumes of 2 M ammonia (NH₃) and 1 M hydrochloric acid (HCl)
E) equal volumes of 2 M ammonium chloride (NH₄Cl) and 1 M hydrochloric acid (HCl)