Technician a Says the Measuring Unit for the Electrical Signal

Technician A says the measuring unit for the electrical signal to the injection control pressure regulator of a HEUI fuel system is reported as a percentage of duty cycle (%) on a scanner display of engine parameters. Technician B says the PWM signal is reported as time (in milliseconds) . Who is correct?

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