Technician a Says When the Pump Pressure Acting on the Pressure

Technician A says when the pump pressure acting on the pressure regulator spool valve becomes greater than the spring pressure, the spool valve moves slightly, opening an exhaust port, and excess fluid pressure is exhausted back to the transmission pan. Technician B says the pressure regulator spool valve directs excess fluid to the transmission cooler. Who is correct?

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