The major product formed in the following reaction
is.
is.
The Correct Option is A
Solution and Explanation
The reaction involves the treatment of an alkene with an acidic catalyst and heat. This reaction typically leads to a cyclohexene derivative, as seen in option (A). The reaction proceeds through a mechanism that involves the formation of a cyclic product with the methyl groups on the same carbon.
The correct option is (A) : 
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