Reaction I: 
 $N{O}_3^{-}+4Zn+7{\left(OH\right)}^{-}+6H_{2}O\to A\uparrow +sideproducts$
Reaction II: 
 $S{O}_3^{2-}+3Zn+8H^{+}\to B\uparrow +sideproducts$
Then identify the total number of correct statements regarding A and B?
(i) Both A and B are red brown coloured pungent odour gases 
(ii) A is identified by its turning moistened red litmus paper blue or turmeric paper brown
(iii) A is identified by its ability to turn filter paper moistened with mercury(I) nitrate solution black
(iv) B is identified by the blackening of filter paper moistened with lead acetate solution
(v) B is identified by its ability to turn filter paper moistened with cadmium acetate solution yellow