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In the following reaction sequence 'A' ...

In the following reaction sequence 'A' is
`C_(2)H_(5)Ioverset(alc KOH)rarrXunderset(C CI_(4))overset(Br_(2))rarrtYoverset(KCN)rarrZoverset(H_(3)O^(+))rarrA`

A

succinic acid

B

oxalic acid

C

malonic acid

D

maleic acid

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The correct Answer is:
A
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