Technician A says that detergents and dispersants keep small particles suspended in the oil so that the filter can filter them out. Technician B says that detergents clean the surfaces

Technician A says that detergents and dispersants keep small particles suspended in the oil so that the filter can filter them out. Technician B says that detergents clean the surfaces within the engine. Who is right?
A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

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