Identify the correct statements from the foll | vedclass

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(D) . Pentan$-3-$one $(CH_3CH_2COCH_2CH_3)$ and Pentan$-2-$one $(CH_3COCH_2CH_2CH_3)$ have different alkyl groups attached to the carbonyl group,so th

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$A, B \ \& \ C$ only

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(D) . Pentan$-3-$one $(CH_3CH_2COCH_2CH_3)$ and Pentan$-2-$one $(CH_3COCH_2CH_2CH_3)$ have different alkyl groups attached to the carbonyl group,so they are metamers. (Correct)$B$. Butanenitrile $(CH_3CH_2CH_2CN)$ and Butaneisonitrile $(CH_3CH_2CH_2NC)$ have different functional groups (nitrile vs isonitrile),so they are functional isomers. (Correct)$C$. Butan$-1-$ol $(CH_3CH_2CH_2CH_2OH)$ and Butan$-2-$ol $(CH_3CH_2CH(OH)CH_3)$ differ only in the position of the $-OH$ group,so they are position isomers. (Correct)$D$. Butan$-1-$amine $(CH_3CH_2CH_2CH_2NH_2)$ is a primary amine,while $N$-methylpropan$-1-$amine $(CH_3CH_2CH_2NHCH_3)$ is a secondary amine. They are functional isomers,not homologs. (Incorrect)Therefore,statements $A, B,$ and $C$ are correct.

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