The correct option is (a) Arsenicals
For explanation I would say: Arsenicals, chloroquine, phenothiazines are reported to deposit in hair shaft. Tetracycline binds to bones and teeths. Lipophilic drugs accumulate in adipose tissues. Epoxides of number of Halogenated hydrocarbon and paracetamol bind irreversibly to the liver tissues resulting in hepatotoxicity.