Explain why it is not possible to synthesize trans-1,2-diethylcyclohexane using the hydrogenation of 1,2-diethylcyclohex-1-ene.

• A. Cyclic alkenes does not undergo catalytic hydrogenation.
• B. Hydrogenation is a syn addition which leads to cis product.
• C. Hydrogenation is an anti addition which leads to cis product.
• D. Cis-alkenes always form cis product on hydrogenation.

Answer: (B)