# Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone ?

$\begin {array} {1 1} (a)\;CH_3Cl & \quad (b)\;CH_3COOH \\ (c)\;CH_3CHO & \quad (d)\;CH_3COCl \end {array}$

$(d) CH_3 COCl$