Which of the following chemical reactions `(s)` is (are) involved in the developing of photographic plate ?
A. `C_6H_4(OH)_2+2AgBr to 2Ag + C_6H_4O_2+2HBr`
B. `AgBr + 2Na_2S_2O_3to Na_3[Ag(S_2O_3)_2]`+ NaBr
C. `AgBr+2NH_3(aq)to[Aq(NH_3)_2]Br`
D. `2AgBr+Na_2S_2O_3 to Ag_2S_2O_3`+2NaBr