A user brings in an older CRT monitor and reports there are issues with the colors and bands of discoloration. Which of the following should be done to correct the issue?

Replacing the power cord addresses power delivery issues and has no effect on the magnetic properties of the CRT's internal components.

Reformatting is a software-level disk operation and has no relationship to CRT monitor hardware or color distortion.

Increasing the refresh rate reduces visible flicker on CRT displays but does not address color banding or magnetic discoloration.

CRT monitors contain a shadow mask made of metal that can become magnetized over time or due to nearby magnetic fields, causing color purity problems, bands of discoloration, or skewed colors. Degaussing passes a rapidly alternating magnetic field through the monitor to demagnetize the shadow mask and restore accurate color reproduction.