The major product of the following reaction is 

Given data : It is given to identify the major product of the reaction.

Explanation

"Two unique oxygen atoms are singularly connected to a central carbon atom in an acetal, which is an organic molecule," says the definition of an acetal as "two independent oxygen atoms are single bonded to a central carbon atom." The basic chemical formula of acetals is $R_{2}C{(OR\text{'})}_2$.

Hence, the correct option  (B). An acetal.