Which is the proper method of determining whether a portable CO 2 fire extinguisher needs recharging?()
A.
Check the tag to see when the extinguisher was last charged
B.
Release a small amount of CO 2 ; if the CO 2 discharges,the extinguisher is acceptable
C.
Weigh the extinguisher and compare the weight against that stamped on the valve
D.
Recharge the extinguisher at least once each year