There are some Certificates/documents which are internationally recognized and have to be carried on board. These are checked/inspected by the port state control officer (PSCO) when he/she/they come on board. One of the following certificates does not have to be carried on board on a bulk carrier (cargo ship). Choose that certificate and mark it

A
International tonnage certificate
B
Cargo ship safety construction certificate
C
Mobile offshore drilling unit safety certificate
D
Cargo ship safety certificate
E
International oil pollution prevention certificate