In the reaction given below The product ‘ X ’ is :

Lithium aluminium hydride, is a reducing agent that is commonly used in modern organic synthesis. It is a nucleophilic reducing agent that is best suited for reducing multiple polar bonds such as $\mathrm{C}=\mathrm{O}$. It can reduce carbonyl compounds to alcohols and amides to amines. $\mathrm{C}=\mathrm{C}$ is not effected during this reaction.