Answer:
Both technicians.
Explanation:
An oscilloscope can be defined as an electronic instrument used for observing, measuring, analyzing, and displaying the waveform of an electric signal.
The output of an oscilloscope is a graph of instantaneous velocity with respect to time.
Generally, an oscilloscope can be used to check ignition system operating voltages. Also, it can be used to check output signals from computer system sensors.
Therefore, both Technician A and Technician B are right.
