A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°. What action should be taken to remove this error during compass adjustment?

A
If the blue ends of the magnets are forward you should raise the fore-and-aft tray.
B
If the blue ends of the magnets are aft you should lower the fore-and-aft tray.
C
If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should add some magnets.
D
If the blue ends of the magnets are aft, and the fore-and-aft tray is at the bottom, you should reverse the magnets.
E