Aspirin is produced by heating salicylic acid with
(a) acetic anhydride in the presence of phosphoric acid
(b) benzoic anhydride in the presence of phosphoric acid
(c) methyl alcohol in the presence of sulfuric acid
(d) phenol in the presence of sulfuric acid
(a) acetic anhydride in the presence of phosphoric acid
(b) benzoic anhydride in the presence of phosphoric acid
(c) methyl alcohol in the presence of sulfuric acid
(d) phenol in the presence of sulfuric acid