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: In the reaction of methoxybenzene with acetic anhydride and aluminum trichloride followed by treatment with an aqueous solution of hydrochloric acid is formed mainly: 
 Options:  <1> 4-methoxybenzoic acid. <2> 1- (4-methoxyphenyl) ethanone. <3> 1- (3-methoxyphenyl) ethanone. <4> 3-methoxybenzoic acid. <5> 4-methoxyphenyl acetate.
