Which of the following pairs of structures represent a pair of enantiomers? a. b. C. d. ОООС a H3CC. H Br HC- NC H3CH₂C COOH H.... H₂N CN CH3 C HC- Br CH3 OH COOH H C Br CN HOOC H C Br H3C OH C. H.. CH3 H₂CC H₂N CN CH₂CH3 COOH H

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