You are underway in the North Sea on course 142°T when you sight a buoy bearing 105°T. The buoy's white light has a characteristic of continuous very-quick flashing. To ensure that your vessel remains in the best navigable water you would __________.

A
continue on course and ensure that the bearings change to the left
B
pass between the buoy and another buoy showing a fixed white light
C
alter course to port and pass the buoy close aboard to either side
D
alter course to port and pass north of the buoy
E