Cho sơ đồ chuyển hóa sau HCOONa A C2H5OH B D (COOH)2. các chất

A. ${\mathrm{CH}}_4,{\mathrm{C}}_2{\mathrm{H}}_6, {\mathrm{C}}_2{\mathrm{H}}_4{\left(\mathrm{OH}\right)}_2$

B. ${\mathrm{H}}_2, {\mathrm{C}}_2{\mathrm{H}}_4, {\mathrm{C}}_2{\mathrm{H}}_4{\left(\mathrm{OH}\right)}_2$

C. ${\mathrm{CH}}_4,{\mathrm{C}}_2{\mathrm{H}}_2, {\left(\mathrm{CHO}\right)}_2$

D.${\mathrm{H}}_2, {\mathrm{C}}_2{\mathrm{H}}_6, {\mathrm{C}}_2{\mathrm{H}}_4{\left(\mathrm{OH}\right)}_2$