GKFix MCQ Question

What is the significance of the example of (-)-2-methylbutan-1-ol converting to (+)-1-chloro-2-methylbutane?

• A. It shows that optical rotation is always conserved.
• B. It shows configuration can be retained even if optical rotation sign changes.
• C. It shows that SN2 reactions always lead to inversion.
• D. It shows that alcohols are more stable than alkyl chlorides.