30.Technician A says temperature sensors that decrease inresistance as the temperature increases are called positivetemperature coefficient (PTC) sensors. Technician B says thatsome vehicle manufacturers use a stepped ECT circuit insidethe PCM to broaden the accuracy of the sensor. Whichtechnician is correct?
(A)Technician B only.
(B)Both Technician A and Technician B are correct.
(C)Neither Technician A nor Technician B is correct.
(D)Technician A only.

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