Which of the following represents a Friedel-Crafts reaction?
- A$C_6H_6 + C_2H_5-Cl \xrightarrow{AlCl_3} C_6H_5-C_2H_5 + HCl$
- B$C_6H_5-OH + HCl \xrightarrow{ZnCl_2} C_6H_5Cl + H_2O$
- C$C_6H_5-Cl + CH_3COCl \xrightarrow{AlCl_3} C_6H_5COCH_3 + Cl_2$
- D$C_2H_5-Br + Mg \xrightarrow{ether} C_2H_5MgBr$
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