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Pair of enantiomers are:
I)  

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II)
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III) 
 
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IV) 
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V)
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A) I, II and III, IV
B) I, II
C) III, IV
D) IV, V

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Last updated date: 13th Jul 2024
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Answer
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Hint: We have to know that the enantiomers are superimposable even on rotation with bond. Enantiomers and diastereomers are two stereoisomers that have the same molecular formula but different structural formula. The pairs which are mirror images of each other can be seen as enantiomers.

Complete answer:
We have to know that enantiomers are pairs of images, molecules or compounds that are non-superimposable on each other. The pairs which are mirror images of each other can be seen as enantiomers. There are many ways to look at a molecule, like enantiomer pairs are chiral molecules that means they have a carbon centre having all four groups different, that carbon is known as chiral carbon. Also enantiomers can be identified on the basis of R/S nomenclature. When the two molecules have R and S nomenclature then they are said to be enantiomers if they are non superimposable on each other or mirror images of each other.
Option A) this is a correct option as I and II are enantiomeric pairs for each other.
      
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   and 
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The pair of molecules are considered to be enantiomers since the position of atoms are changing the one on wedge are changing to dash on other one also these pairs are not mirror images of each other.
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   and 
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Same explanation goes with this pair of enantiomers.
Option B) this option can be correct but since it does not include the other pair thus this makes this option incorrect.
Option C) this option can be correct but since it does not include the other pair thus this makes this option incorrect.
Option D) this is an incorrect option as this pair is not enantomeric in nature.

Note:
We have to know that the chiral molecule is the one having all different groups on a carbon atom. Enantiomers describe relations between two isomers also they contain chiral centers but that is not true that all enantiomers have chiral centers.