A fire starting by spontaneous combustion can be expected in which condition?()
A、A.Paints,varnish,or other liquid flammables are stowed in a dry stores locker
B、B.Inert cargoes such as pig iron are loaded in a wet condition
C、C.Oily rags are stowed in a metal pail
D、D.Clean mattresses are stored in contact with an electric light bulb