Which one of the following of 2,3-butane diol is enantiomeric?

• Correct answer
  A

  $2 R, 3 R$ and $2 S, 3 S$
• B

  $2 S, 3 S$ and $2 S, 3 R$
• C

  $2 R, 3 R$ and $2 R, 3 S$
• D

  $2 S, 3 S$ and $2 R, 3 S$

Solution

The pairs $2 R, 3 R$-butane diol and $2 S, 3 S$-butane diol are enantiomeric.

Hence, the correct answer is option: 'A'.