The reaction shown below is:
$CH_3CH_2COCH_2CH_3 \xrightarrow{Zn-Hg/HCl} CH_3CH_2CH_2CH_2CH_3$

Identify the correct statement regarding the following sequence of reactions:
$3\text{-methylbut-1-ene}$ $\xrightarrow[(ii) NaBH_4]{(i) Hg(OCOCH_3)_2/H_2O} A$ $\xrightarrow{\Delta, H_2SO_4} B (\text{major alkene})$ $\xrightarrow{O_3/Zn} C + D$

Which of the following is an incorrect match for differentiating the given compounds?

$A$ compound $A$ has a molecular formula $C_2Cl_3OH$. It reduces Fehling's solution and on oxidation gives a monocarboxylic acid $(B)$. $A$ is obtained by the action of chlorine on ethyl alcohol. $A$ is:

The reaction of acetophenone with benzaldehyde in the presence of $HCl$ and heat produces product $(A)$. Identify $(A)$.

Identify the product $P$ from the following sequence of reactions?