Technician A says that an SAE 40 oil has a lower viscosity than an SAE 20W-50 at engine operating temperature. Technician B says that a 10W-40 multiviscosity oil reaches bearings

Technician A says that an SAE 40 oil has a lower viscosity than an SAE 20W-50 at engine operating temperature. Technician B says that a 10W-40 multiviscosity oil reaches bearings faster when the engine is first started than an SAE 30 single viscosity oil. 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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