Predict the product $C$ in the following series of reactions:

Consider the following reaction sequence:
$\text{But-2-ene}$ $\xrightarrow{\text{ozonolysis}} X$ $\xrightarrow[(ii) H_3O^+]{(i) CH_3MgBr} Y$ $\xrightarrow[573 \ K]{Cu} Z$
The correct statements about $Z$ are:
$I$. It gives yellow precipitate with $I_2$ and $NaOH$ solution.
$II$. It undergoes disproportionation reaction in the presence of concentrated $NaOH$ solution.
$III$. It undergoes Wolff-Kishner reduction.
$IV$. It forms red precipitate with Fehling's reagent.

Given below are two statements :
Statement $I :$ The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion.
Statement $II :$ The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product.
In the light of the above statements,choose the most appropriate answer from the options given below :

The product $(P)$ is formed by the reaction of cyclohexanone with $2$ equivalents of ethanol in the presence of an acid catalyst. The reaction is given as:
Cyclohexanone $+ 2EtOH \xrightarrow{H^+} (P)$
Product $(P)$ is:

Which of the following will give a yellow precipitate $(ppt.)$ with iodine and alkali?

The correct statement regarding a carbonyl compound with a hydrogen atom on its $\alpha$-carbon is