An Employee Says His Monitor Is Acting Strangely and Is

An employee says his monitor is acting strangely and is asking how to open the CRT. What do you tell the employee?

A) Unplug the CRT before opening the case to avoid electrical shock.
B) Unplug the CRT so you don't damage the monitor.
C) Never open a CRT monitor without special equipment and training.
D) Never open a CRT monitor because the CRT tube will shatter.