30.Technician A says temperature sensors that decrease in
resistance as the temperature increases are called positive
temperature coefficient (PTC) sensors. Technician B says that
some vehicle manufacturers use a stepped ECT circuit inside
the PCM to broaden the accuracy of the sensor. Which
technician 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.