Assertion : Staggered conformation of ethane is 12.5 kJ mol−1 more stable than the eclipsed conformation. Reason : The two conformations of ethane cannot be separated at room temperature.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion.
• C. If assertion is true but reason is false.
• D. If both assertion and reason are false.