材料： MV Oakland completed loading in the port of Buckie in the early evening．The master，an experienced shiphandler，personally manoeuvred Oakland out of harbour．The chief officer joined the master on the bridge shortly before clearing the northern breakwater．Once clear of the breakwater the course to steer to make for the open sea was 295° leaving the shoreline and some rocks to port and the West Muck rocks to starboard. From his previous experience and earlier advice from the pilot who had brought the vessel into port，the master knew that this course cleared the south rocks by about 750m and West Muck rocks by about 450m． A light beacon which marked the West Muck rocks and lay some two and three quarter cables to the north-west of the northern breakwater was not lit．Neither the master，nor the mate was aware of this．Once clear of the harbour the master became distracted by the working light of a vessel at anchor about 0.5 mile distant on his starboard and thought he was to port of his intended track．He altered course to starboard to regain it and，once he thought he was back on track，altered back to port．Moments later Oakland grounded on the West Muck rocks． The following morning Oakland was refloated on the rising ride with the aid of a tug． 问题： It is inferred that MV Oakland was brought alongside at Buckie by _____． A.a pilot B.the master C.the chief mate D.an experienced shiphandler Prior to his first altering course to starboard，the master thought he deviated to port of his intended track steaming too far away from ______．A.the northern breakwater B.the shoreline C.West Muck rocks D.the south rocks The master most possibly mistook the working light of a vessel at anchor as the light marking ______．A.the shoreline B.the south rocks C.the northern breakwater D.West Muck rocks Of the following，______ is not the lesson of this accident．A.The master of a vessel making an occasional visit to a port is less likely to have accumulated sufficient handling experience B.An experienced master should not be too confident of his ability to undertake what appears to be a straightforward act of pilotage C.When conducting your own pilotage，it is always necessary to check with the harbour authorities to ensure you know of any local notices to mariners D.Steering is one of the oldest skills of seamen，but it is not just as important today as it ever was