Chemicals Such as Chlorine (Bleach),iodine,phenol,and Formaldehyde Are

Chemicals such as chlorine (bleach) ,iodine,phenol,and formaldehyde are:

A) unable to destroy viruses on surfaces coming into contact with infected patients.
B) unable to destroy viruses on objects coming into contact with infected patients.
C) able to destroy viruses in the external environment.
D) used internally as effective antiviral medications.