there is no illustration # gs-0124.
Engine
Expired / General Subjects: Which of the figures in illustration GS-0080 would be used in conjunction with f...
Discussing this exam question.
Still no illustration GS-0124
GS-0124 is a purifier and Figure B is referring to shaft connection from the motor to the gear pump.
GS-0080 and GS-0124 have still not been updated by the Coast Guard. Please see their updates page here