$(1)$ What is the IUPAC name for this compound?

$-$a$.1-$chloro$-2-$methyl$-4$ nitro beuzens

$($b$)4-$caloro$-3-$methigeoxy aniline

$($c$)2-$chloro $-5-$nitrotoluene.

$($d$)4-$chloro$-3-$methy$|$pheny$|)$ nitvate

$(2)$ The following pair of compound can be best descrivibedasn

$($a$)$ diasteriomers

$($b$)$ enantiomers

$($c$)$ identical

$($d$)$ constitutional $($structural isomers$)$

$(3)$ which compound gives $4$ signals$($not counting coupling$)$ in its $1H-$NNRo spectrum?

uarr

A

A

$B$ and $C$

$($c$)C$

$($d$)A,B$ and $C$