Technician A says hard spots in the drum are caused by overheating the brakes..Technician B says hard spot formation requires drum replacement..Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Hard Spots

Localized areas of abnormal hardness or stiffness in materials, often leading to uneven wear, damage, or failure in mechanical contexts.

Overheating

A condition where an engine's temperature exceeds its normal operating range, potentially causing damage.