Which of the following solutions show buffer properties?
0. 100 L of 0.25 M $NaCH_3CO_2$ + 0.150 L of 0.25 M HCl
1. 100 L of 0.25 M $HCH_3CO_2$ + 0.050 L of 0.25 M NaOH
2. 100 L of 0.25 M $NaCH_3CO_2$ + 0.050 L of 0.25 M NaOH
3. 100 L of 0.25 M $NaCH_3CO_2$ + 0.050 L of 0.25 M HCl