Technician a Says That an Advantage of Cummins Intebrake on a Pre-2010

Multiple Choice

Technician A says that an advantage of Cummins Intebrake on a pre-2010 ISX engine is progressive retarding that options engine braking from one through all six engine cylinders. Technician B says that on this engine, Intebrake manages braking using both of its overhead camshafts. Who is right?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B