The $IUPAC$ name of the given compound is:

The $IUPAC$ name of $CH_3-CH(OH)-CH(C_2H_5)-CH_2-OH$ is

The $IUPAC$ name of $C_6H_5COCl$ is

Given below are two statements:
Statement $I$: $IUPAC$ name of $HO-CH_2-(CH_2)_3-CH_2-COCH_3$ is $7-$hydroxyheptan$-2-$one.
Statement $II$: $2-$oxoheptan$-7-$ol is the correct $IUPAC$ name for above compound.
In the light of the above statements,choose the most appropriate answer from the options given below:

What is the $IUPAC$ name of the following compound?

The $IUPAC$ name of the given compound is $CH_3-CH(CN)-CH(CH=CH_2)-CH_2-CH_3$.