Technician A says that if a scan tool says that the EGR valve is being commanded to open 50 percent, you can be assured that the valve is working properly and no further testing is necessary on the...

Technician A says that if a scan tool says that the EGR valve is being commanded to open 50 percent, you can be assured that the valve is working properly and no further testing is necessary on the EGR valve. Technician B says that if a scan tool shows that the voltage for the ECT sensor is out of range, then you can be assured that the ECT sensor itself is at fault and no further pinpoint testing is necessary on the ECT sensor circuit. Who is correct?

A. Technician A only

B. Technician B only

C. Both technicians

D. Neither technician