In the reaction sequence
`RCOCl+H_(2)overset(Pd+BaSO_(4))rarrAoverset(HCN)rarrBoverset(H_(3)O^(o+))rarrC`
A,B and C are given by the set :-
A. `RCHO,RCH(OH)CN, RCH(OH)CH_(2)NH_(2)`
B. `RCHO, RCH(OH)CN, RCH(OH)COOH`
C. `RCHO,R-underset(O)underset(||)C-underset(CN)underset(|)CH_(2),R-underset(O)underset(||)C-OH`
D. `RCHO,R-CH_(2)-CN,R-CH_(2)-COOH`
