Which of the following statements regarding electrophilic aromatic substitution is wrong?
a. Friedel-Crafts alkylation with primary alkyl chlorides may involve rearrangement
b. Friedel-Crafts acylation with primary acyl chlorides involves rearrangement
c. Alkylation of benzene with an alkyl chloride requires only a catalytic amount of a Lewis acid such as AlCl3
d. Sulfonation of benzene is reversible