The following reaction shows that the proximity of the bromide ion to carbon-2 in the transition state is the reason why the 1,2-addition product is formed at a higher rate.
Explain why it was necessary to know that the reaction was performed under kinetically controlled conditions.

• A. Because the amount of product depends on the rate of reaction only under the kinetic conditions.
• B. Because the amount of product depends on the stability of the product only under the kinetic conditions.
• C. Because the 1,2-addition product is always formed only under the kinetic conditions.
• D. None of these.

Answer: (A)