Several merchant ships are arriving at the scene of a distress incident. One of the them must assume the duties of the Coordinator Surface Search (CSS). Which of the following statements is TRUE?

A
CSS duties are always assumed by passenger vessels, dry cargo vessels, or tankers in that order of precedence.
B
The CSS must be established by mutual agreement between the ships concerned.
C
A tank vessel should never be assigned CSS duties unless only tank vessels are present.
D
The first vessel to arrive at the distress incident is designated as the CSS.
E