Alkene (A) will be:mathop Alimits_{(text{alke | vedclass

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(C) The reaction with $RCO_3H$ followed by $H_2O$ involves anti-dihydroxylation,which produces a racemic mixture from a $cis$-alkene.The reaction with

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$cis-4-	ext{octene}$

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(C) The reaction with $RCO_3H$ followed by $H_2O$ involves anti-dihydroxylation,which produces a racemic mixture from a $cis$-alkene.The reaction with cold dilute $KMnO_4$ involves syn-dihydroxylation,which produces a meso-compound from a $cis$-alkene.For the product to be a meso-compound via syn-addition,the alkene must be symmetrical.$cis-4-	ext{octene}$ is a symmetrical alkene $(CH_3CH_2CH_2CH=CHCH_2CH_2CH_3)$.Therefore,$cis-4-	ext{octene}$ satisfies both conditions.

Alkene $(A)$ will be:
$\mathop A\limits_{(\text{alkene})} \xrightarrow{RCO_3H, H_2O} \text{Racemic mixture}$
$\mathop A\limits_{(\text{alkene})} \xrightarrow{\text{Cold dil. } KMnO_4} \text{Meso-compound}$

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Alkene $(A)$ will be:$\mathop A\limits_{(\text{alkene})} \xrightarrow{RCO_3H, H_2O} \text{Racemic mixture}$$\mathop A\limits_{(\text{alkene})} \xrightarrow{\text{Cold dil. } KMnO_4} \text{Meso-compound}$