Which among the following has E configuration | vedclass

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(C) To determine the $E$ or $Z$ configuration,we use the Cahn-Ingold-Prelog $(CIP)$ priority rules based on atomic number.For option $C$,the structure

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(C) To determine the $E$ or $Z$ configuration,we use the Cahn-Ingold-Prelog $(CIP)$ priority rules based on atomic number.For option $C$,the structure is $1-chloropent-2-en-3-al$ derivative.On the left carbon of the double bond,$Cl$ (atomic number $17$) has higher priority $(1)$ than $CH_3$ (atomic number $6$ for $C$) (priority $2$).On the right carbon of the double bond,$CHO$ (atomic number $8$ for $O$) has higher priority $(1)$ than $C_2H_5$ (atomic number $6$ for $C$) (priority $2$).In the structure shown in option $C$,the groups with priority $1$ ($Cl$ and $CHO$) are on opposite sides of the double bond.Therefore,this represents the $E$ configuration.

Which among the following has $E$ configuration?

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