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An alkali metal hydride (NaH)reacts with...

An alkali metal hydride (NaH)reacts with diborane in A to give a tetrahedral compound B which is extensively used as reducing agent in organic synthesis. The compounds A and B respectively are,

A

`C_2H_6 and C_2H_5Na`

B

`CH_3 COCH_3 and B_3N_3H_6`

C

`C_6H_6 and NaBH_4`

D

`(C_2H_5)_2O and NaBH_4`

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