You should keep all computer rooms at reasonable humidity levels, which are in between:

A.
20 – 70 percent.

B.
10 – 70 percent.

C.
10 – 60 percent.

D.
70 – 90 percent.

E.
60 – 80 percent.

F.
None of the choices.

Explanation:

You should keep all computer rooms at reasonable temperatures, which is in between 60 – 75
degrees Fahrenheit or 10 – 25 degrees Celsius. You should also
keep humidity levels at 20 – 70 percent.