A scraping noise is heard when the engine is running and the air conditioning is off. TechnicianA says this may be caused by a too narrow gap between the compressor's armature and rotor. Technician B says a quick accurate test is to switch on the air conditioning to see if the noise stops. Who is correct??
A. ?Technician A only
B. ??Technician B only
C. ?Both A and B
D. ?Neither A nor B
Answer: C
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