A notice of readiness is not valid unless it indicates that the vessel is ready to load or discharge as the case may be，at the time（）it is given.

A.the estimated cost of damage
B.the name of the owner or agent of the vessel
C.an evaluation of who was at fault
D.the amount of ballast on board

A.Notice of Demurrage
B.Survey Report
C.Notice of Readiness
D.Notice of Responsibility

A.At
B.On
C.Of
D.In