Is it possible to separate the following pair of compounds by distillation or recrystallization? Explain.

• A. No, it is not possible.
  Since the two compounds are diastereomers, they can't be separated by normal physical means.
• B. No, it is not possible.
  Since the two compounds are enantiomers, they can't be separated by normal physical means.
• C. Yes, it is possible.
  Since the two compounds are diasteromers, they can be separated by normal physical means.
• D. Yes, it is possible.
  Since the two compounds are enantiomers, they can be separated by normal physical means.