Technician A says that the ECT and IAT sensors can be tested by using a digital multimeter or a scan tool. Technician B says that the ECT sensor is a high-authority sensor at engine start-up and is used for open-loop control, as well as idle speed. Who is right?Select one:a. Both technicians A and Bb. Neither technician A nor Bc. Technician A onlyd. Technician B only