Which of the Following Can Act as Buffer Solutions

Multiple Choice

Which of the following can act as buffer solutions?
I.0.1 M HC₂H₃O₂/0.1 M NaC₂H₃O₂
II.0.1 M NH₃/0.1 M NH₄Cl
III.0.1 M HNO₃/0.1 M NaNO₃
IV.0.1 M H₂SO₃/0.1 M NaHSO₃
V.0.1 M KHSO₄/ 0.1 M H₂SO₄

A) I,II,and III
B) II,IIIand IV
C) IIIand IV
D) I,IIand IV
E) III,IVand V