下列哪兩種溶液各1.0L混合後可形成緩衝溶液?
A) 0.1M KOH+0.1M CH3NH3Cl
B)0.1M KOH+0.2M CH3NH2
C)0.2M KOH+0.1M CH3NH3Cl
D)0.1M KOH+0.2M CH3NH3Cl
E)以上皆非