Which of the following reactions leads to the formation of chloretone?

The increasing order of the boiling points of the major products $A$,$B$ and $C$ of the following reactions will be:

Which alkyl halide has the highest bond enthalpy of the $C-X$ bond?

In a nucleophilic substitution reaction $R - Br + Cl^{-} \xrightarrow{DMF} R - Cl + Br^{-}$,which one of the following undergoes complete inversion of configuration?

Assertion $A:$ Hydrolysis of an alkyl chloride is a slow reaction but in the presence of $NaI$,the rate of the hydrolysis increases.
Reason $R:$ $I^{-}$ is a good nucleophile as well as a good leaving group.
In the light of the above statements,choose the correct answer from the options given below.

Consider the above chemical reaction. Product $A$ is: