Technician a Says a Pulse-Width Modulation Value of 50% Means

Multiple Choice

Technician A says a pulse-width modulation value of 50% means the valve is open 50% of the time and closed 50% of the time. Technician B says a pulse-width modulation of 255 means that line pressure is increased by 25%. Who is correct?

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