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A and B in the following reactions are :...

A and B in the following reactions are `:`
`RCOR' underset( KCN)overset(HCN)(rarr) A overset( B ) (rarr) R.R' ( C ) ( OH ) (CH_(2)NH_(2))`

A

`A=R.R'(C ) ( CN ) ( OH), B = L i[AlH_(4) ]`

B

`A=R.R'(C ) ( COOH ) ( OH ) , B = NH_(3)`

C

`A=R.R'(C ) ( C N ) ( OH ) , B = H _(3) O ^(+)`

D

`A= R.R' CH_(2) CN, B= NaOH`

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The correct Answer is:
A
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