Technician a Says the Torque Converter Clutch (TCC) Solenoid Is

Technician A says the Torque Converter Clutch (TCC) solenoid is monitored by the Powertrain Control Module (PCM) and Diagnostic Trouble Codes can be set when the TCC is not operating correctly. Technician B says on hydraulically controlled transmissions, the PCM will not set codes unless the TCC circuit is open or shorted, or the solenoid is shorted. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B