In the projection formula [A],two groups (Br | vedclass

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(C) In a Fischer projection,interchanging any two groups at a chiral center results in the inversion of configuration (enantiomer).$1$. Starting with

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$B$ and $C$ are enantiomers.

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(C) In a Fischer projection,interchanging any two groups at a chiral center results in the inversion of configuration (enantiomer).$1$. Starting with $[A]$,interchanging $Br$ and $CH_3$ gives $[B]$. Since one interchange occurred,$[B]$ is the enantiomer of $[A]$.$2$. Starting with $[A]$,interchanging $C_2H_5$ and $Cl$ gives $[C]$. Since one interchange occurred,$[C]$ is the enantiomer of $[A]$.$3$. Since both $[B]$ and $[C]$ are enantiomers of $[A]$,$[B]$ and $[C]$ must be identical (they have the same configuration).$4$. Evaluating the statements:- $A$ and $B$ are enantiomers (Correct).- $A$ and $C$ are enantiomers (Correct).- $B$ and $C$ are identical (Correct).- $B$ and $C$ are enantiomers (Incorrect).Therefore,the statement that is $NOT$ correct is that $B$ and $C$ are enantiomers.

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