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"Hex-3-ynal" overset((1)NaBH(4))to overs...

`"Hex-3-ynal" overset((1)NaBH_(4))to overset((2)PBr_(3))to overset((3)"Mg/Ether")to overset((4)CO_(2))to overset((5)H^(oplus))to(X)`, formed product X will be:

A

B

C

D

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Verified by Experts

The correct Answer is:
D
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