Every vessel receiving a distress call is obliged to go to aid the vessel in distress.
A.
Every one receiving a distress call is obliged to go to aid the vessel in distress.
B.
Every vessel receiving a distress call needn 't go to aid the vessel in distress.
C.
Every vessel is obliged to go to aid the vessel in distress when she receives a distress call.
D.
Every vessel shouldn ' t go to aid the vessel in distress.