In this sequence Z is

$\begin {array} {1 1} (A)\;\text{p-bromo flurobenzene} & \quad (B)\;\text{p-romoaniline} \\ (C)\;\text{1,3,5 Tribromobenzene} & \quad (D)\;\text{2,4,6 tribromo 1-flurobenzene} \end {array}$