What is the role of the catalyst in electrophilic aromatic substitution reactions of benzene?
a. The catalyst speeds up the reaction by deprotonating the arenium ion that forms in the reaction.
b. The catalyst attaches to the benzene ring, making it more susceptible to electrophilic substitution.
c. The catalyst reacts with the non-benzene reactant to form the electrophile in the reaction.
d. The catalyst prevents addition reaction from occurring.