Parathion has which one of the following characteristics? ( ) A: It<br/>is inactivated by conversion to paraoxon B: It<br/>is less toxic to humans than malathion C: It is more persistent in the environment than DDT (dichlorodiphenyltrichloroethane, halogenated hydrocarbon insecticides) D: It<br/>is poorly absorbed through skin and lungs E: If<br/>treated early, its toxicity may be partly reversed by pralidoxime