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Consider the following transformation ...

Consider the following transformation
`R-C-=N overset('A') to R-CH_(2)-NH_(2)` Here 'A' will be.

A

`H_(2)//Ni`

B

`KOH`

C

`NaOH//Br_(2)`

D

`KMnO_(4)`

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The correct Answer is:
A
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