A molecule with the formula C4H8Cl2 shows two stereoisomers. Could this molecule be a meso compound, and why?

• A. No, because all molecules with this formula are chiral.
• B. Yes, if the molecule has an internal mirror plane and two chiral centers.
• C. No, because the formula indicates an odd number of chiral centers.
• D. Yes, because all molecules with this formula lack chiral centers.

Answer: (B)