Technician A says that closed-loop operation is designed to allow the engine computer to monitor the results of its own fuel control through an oxygen sensor mounted in the exhaust stream. Technician...

Technician A says that closed-loop operation is designed to allow the engine computer to monitor the results of its own fuel control through an oxygen sensor mounted in the exhaust stream. Technician B says that closed loop is the best engine-operating mode for wide-open throttle performance because of the increased precision that closed loop provides. Who is correct?

A. Technician A only

B. Technician B only

C. Both technicians

D. Neither technician