Which of the following products is/are correctly mentioned in the following reactions?

(A) $\mathrm{HCHO + NaOD \rightarrow HCOONa + CH_3OD}$

(B) $\mathrm{HCDO + NaOH \rightarrow DCOONa + CH_2DOH}$

(C) $\mathrm{HCDO + NaOEt \rightarrow DCOOEt + DCH_2ONa}$

(D) $\mathrm{D_2CO + NaOD \rightarrow DCOONa + CD_3OD}$