Technician a Says a Pressure Gauge Can Be Inserted into the Oxygen

Technician A says a pressure gauge can be inserted into the oxygen sensor bore, and back pressure caused by the catalytic converter can be measured. Technician B says a vacuum gauge can be used to identify a restricted converter. Who is correct?

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

Correct Answer:

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