单选题Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.AIt is required on all vesselsBIt may be located in a conspicuous place in the wheelhouseCIt may be located at the bilge and ballast pump control stationDAll of the above
单选题
Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
A
It is required on all vessels
B
It may be located in a conspicuous place in the wheelhouse
C
It may be located at the bilge and ballast pump control station
D
All of the above
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