37.Please answer to the questions by the following article:To ensure the effective implementation of the provisions of the ship security plan, drills shouldbe conducted at least once every three months, in cases where more than 25 percent ofship’s personnel has been changed, at any one time, with personnel that has not previouslyparticipated in any drill on the ship, within the last months, a drill should be conduct within oneweek of the change. These drills should test individual elements of the plan.If there are twenty crewmember on your ship and changed three at this port, the ship took placethe drills last month, you should do ISPS drills within .
(A)three months
(B)one week
(C)twenty-four hours
(D)keep going as usual