Free Radio Pratique will be granted by the Port Health Office in the following case （） .

A、A.Vessel with a case or suspected case of infectious disease on board

B、B.Vessel with a dead body on board

C、C.Vessel which has visited plague-infected ports during the current voyage

D、D.Cargo vessel which hasn't called at any plague infected ports during the current voyage and on which there is not any case of infectious disease，or any dead body