Sourima was having a severe headache. She took a medicine to relieve her pain. The medicine is industrially prepared by
(a) mononitration of phenyl methanoate
(b) acetylation of salicylic acid in presence of an acid
(c) hydrogenation of anisole with Br2 in ethanoic acid
(d) nitration of anisole with a mixture of concentrated sulphuric and nitric acids
