An Employee in the Maintenance Department Says Her Old CRT

Multiple Choice

An employee in the maintenance department says her old CRT monitor has a distorted image. You visit her station and find the image on her monitor is jittery and distorted. You also notice a number of electric components and motors on her desk. What could be causing the distorted images?

A) The RFI from the microwave in the nearby lunchroom
B) Magnetic interference from the electric motors
C) EMI from the building power system
D) The monitor is just old and needs to be replaced.