Which aromatic compound possesses a seven-membered ring?

Product $(A)$ is

The most common type of reaction in aromatic compounds is

Identify correct statement/s :
$(A)$ $-OCH_3$ and $-NHCOCH_3$ are activating groups
$(B)$ $-CN$ and $-OH$ are meta directing groups
$(C)$ $-CN$ and $-SO_3H$ are meta directing groups
$(D)$ Activating groups act as ortho- and para-directing groups
$(E)$ Halides are activating groups
Choose the correct answer from the options given below :

Which of the following species participates in the sulphonation of the benzene ring?

Which of the following reacts with benzene in the presence of anhydrous aluminum chloride to form acetophenone?