Provide a brief overview of arsenic toxicology and its common exposure routes.

• A. Arsenic exposure is only via inhalation in occupational settings.
• B. Arsenic can be toxic and carcinogenic; exposure occurs via drinking water, food, and occupational sources; inorganic arsenic is more toxic.
• C. Arsenic is harmless in all forms.
• D. Arsenic exposure occurs only through water.

Answer: (B)