R, S-configuration is a useful tool for determination of enantiomers, diastereomers and homomers. If configuration of all chiral centers are opposite then structures are enantiomers, if all chiral centers have same configuration then they are homomers and if some have same configuration and some have opposite configuration then they are diastereomers.

Among above structures find out enantiomerie structures :

Options

A. II and III
B. I and II, II and IV
C. I and IV
D. III and IV

Answer

B

Explanation

Compound with opposite configuration are enantiomers.