When a vessel changes course from one cardinal heading to another cardinal heading whilea djusting the compass，which action should be taken?（）
- AThe course change should be made rapidly to prevent transient induced magnetism while passing the intercardinal headings
- BAfter the new heading is reached，the vessel should steam on that course for at least two minutes before the adjustment
- CDuring the course change，you should gently tap the compass to remove any error caused by friction on the pivot bearing
- DAfter steadying on the new heading，the compass card should be slewed by a magnet and allowed to oscillate freely to remove any gaussin error