You're working at a large industrial plant and notice a tag similar to the one shown in the figure above. Which of the following actions should you take? A. Operate this switch only after normal working hours. B. Operate this switch only after getting permission from the person who signed the tag. C. Operate this switch only after making certain no one is working on the affected circuit. D. Operate this switch only if more than 24 hours have elapsed since the tag was signed.