Above reaction is an example of 

The reaction shows an ester reacting with an alcohol in the presence of $\mathrm{HCl}$, and the alkoxy group of the ester changes from $\mathrm{OMe}$ to the propyl group while $\mathrm{MeOH}$ is formed as a by-product. This is exchange of the ester alkoxy group by another alcohol, which is called $\text{transesterification}$. **Therefore the correct option is $\mathrm{D}$.**