The minimum number of carbon atoms in ketones which will show chain isomerism is:

What is the reduction of aldehydes and ketones in the presence of zinc amalgam and concentrated $HCl$ called?

The major product of the following reaction is:

The product of the reaction is

Product $(C)$ of the above reaction is

Given below are two statements:
Statement $I$: $H_2N-CO-CH_2-CH_2-CO-CH_3$ under Clemmensen reduction conditions will give $HOOC-(CH_2)_3-CH_3$.
Statement $II$: $CH_3-CH(CH_3)-CH_2-CH(Cl)-CO-CH_3$ under Wolff-Kishner reduction conditions will give $CH_3-CH(CH_3)-CH_2-CH(Cl)-CH_2-CH_3$.
In the light of the above statements,choose the correct answer from the options given below: