What is the major organic product of the following Claisen rearrangement?

Question

Quizplus · Accepted Answer

The Claisen rearrangement involves the migration of an alkyl or aryl group from one oxygen atom to another within a β-keto ester or β-diketone. In this case, the rearrangement occurs from the carbonyl oxygen to the neighboring alkoxide group, resulting in the formation of a new β-keto ester with the alkyl group in the β-position. This product is II. The other products (I, III, IV) are formed from subsequent reactions of the initial product with the strong base used for the rearrangement.

What Is the Major Organic Product of the Following Claisen