Technician A says that a good piston can be ruined by cleaning the grooves on a wire wheel. Technician B says an old, broken piston ring works well to clean

Technician A says that a good piston can be ruined by cleaning the grooves on a wire wheel. Technician B says an old, broken piston ring works well to clean the ring grooves. Who is right?
A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

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