The reaction of $1 \mathrm{mol}$ each of $\mathrm{p}$-hydroxyacetophenone and methyl magnesium iodide will give :

The product obtained in the reaction 

 is

Consider the following reactions :

The product $\left(\mathrm{B}\right)$ is

The major product $\left(\mathrm{A}\right)$ formed in the reaction

is:

The products formed in the reaction are :

Identify the final product of the reaction:

In the reaction 

the Duct(B) is :