Đáp án B
Ví dụ: H2NCH2COOH (X) + NaOH → H2NCH2COONa + H2O
H2NCH2COOH (X) + HCl → ClH3NCH2COOH
HCOONH4 (Y) + NaOH → HCOONa + NH3 + H2O
HCOONH4 (Y) + HCl → HCOOH + NH4Cl
H2NCH2COOCH3 (T) + NaOH → H2NCH2COONa + CH3OH
H2NCH2COOCH3 (T) + HCl → ClH3NCH2COOCH3