An IS auditor inspected a windowless room containing phone switching and networking equipment and documentation binders. The room was equipped with two handheld fire extinguishers-one filled with CO 2 , the other filled with halon. Which of the following should be given the HIGHEST priority in the auditor's report? 
A、The halon extinguisher should be removed because halon has a negative impact on the atmospheric ozone layer. 
B、Both fire suppression systems present a risk of suffocation when used in a closed room. 
C、The CO 2 extinguisher should be removed, because CO 2 is ineffective for suppressing fires involving solid combustibles (paper). 
D、The documentation binders should be removed from the equipment room to reduce potential risks.