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Witting reagent is used for the synthesi...

Witting reagent is used for the synthesis of alkenes from ketone in organic chemistry. The Witting reagent is.

A

`(Ph_3 P)= CH_2` Triphenyl phosphine methylene

B

`(Ph_3 P) = O` Triphenyl phosphine oxide

C

`(Ph_3 P) CH_3 Br`

D

`Ph_3 P`

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The correct Answer is:
A
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