Which of the following chemical reaction(s) is//are involved in developing of photographic plate?
A. `C_(6)H_(4)(OH)_(2)+2AgBrto2Ag+C_(6)H_(4)H_(2)+2HBr`
B. `AgBr+2Na_(2)S_(2)O_(3)toNa_(3)[Ag(S_(2)O_(3))_(2)]+NaBr`
C. `2AgNO_(3)+Na_(2)S_(2)O_(3)toAg_(2)S_(2)O_(3)+2NaNO_(3)`
D. `AgNO_(3)+KCNtoAgCN+KNO_(3)`.
