An alkene on reductive ozonolysis gives two products A and B. When these products are treated with conc. KOH one of these products gives an alcohol and an acid salt. Here the alkene can be

The major product of the following reaction is:

In the given reaction, the product $\mathrm{P}$ is

In the following reaction sequence

X and Y are

The major product of the following reaction is:

The major product in the following conversion is

What is the major product expected from the following reaction?



Where D is an isotope of hydrogen.