Which of the following reactions is correct?

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(B) Let us analyze each reaction:$(a)$ Benzene + Chlorobenzene in the presence of anhydrous $AlCl_3$ does not undergo Friedel-Crafts alkylation or ary

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$b$ and $d$

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(B) Let us analyze each reaction:$(a)$ Benzene + Chlorobenzene in the presence of anhydrous $AlCl_3$ does not undergo Friedel-Crafts alkylation or arylation because the $C-Cl$ bond in chlorobenzene is very strong due to resonance,making it unreactive towards electrophilic substitution.$(b)$ Benzene reacts with excess $Cl_2$ in the presence of anhydrous $AlCl_3$ in the dark to form hexachlorobenzene via electrophilic aromatic substitution.$(c)$ Benzene + Vinyl chloride $(CH_2=CH-Cl)$ in the presence of anhydrous $AlCl_3$ does not react because the $C-Cl$ bond in vinyl chloride has partial double bond character due to resonance,making it inert.$(d)$ Benzene + Allyl chloride $(CH_2=CH-CH_2Cl)$ in the presence of anhydrous $AlCl_3$ undergoes Friedel-Crafts alkylation to form allylbenzene $(C_6H_5-CH_2-CH=CH_2)$.Thus,reactions $(b)$ and $(d)$ are correct.

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