A sailing vessel is overtaking a steam vessel in a fairway on International waters,so as to pass on the steam vessel’s port side. The sailing vessel is the().
A:privileged vessel and would sound two short blasts
B:burdened vessel and would sound two prolonged blasts followed by two short blasts
C:burdened vessel and would sound no whistle signal
D:privileged vessel and would sound no whistle signal
出自:海船船员证