Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: The reaction of benzene with tertbutyl chloride, in the presence of aluminum trichloride, is an example of: 
 Options:  <1> Nucleophilic aromatic substitution reaction. <2> Electrophilic aromatic substitution. <3> Addition of halogens. <4> Acid catalyzed hydrolysis. <5> Obtaining alkyl halides.
