Carbon oxygen double bond are easily reduced by `NaBH_(4) or LiAlH_(4)`. The actual reducing agent in these reduction is hrdride ion `(H^(-))`

The metal hydrogen bond in `LiAlH_(4)` is more than polar than metal hydrogen bond in `NaBH_(4)`. As a result `LiAlH_(4)` is strong reducing agent than `NaBH_(4)`. Esters, carboxylic acids, amides cannot be reduced by `NaBH_(4)`
The carbonyl group of amide of reduced to methylene group by `LiAlH_(4)`
, Identify X:

Options

A.
B.
C.
D.

Answer

B