Which of the following can be used to clean surfaces and mechanisms?

A.
Household cleaning cloths such hand towels and household tissues.

B.
Fabrics and materials that have been approved for cleaning.

C.
Synthetic cloths.

D.
B and C

Explanation:
Fabrics and materials that have been approved for cleaning should be used to clean surfaces and mechanisms. Avoid using volatile substances such as paint thinners or isopropyl alcohol. They can damage surfaces.
Incorrect Answers:
A: Household cleaning cloths such as hand towels and household tissues should not be used as cleaning mechanisms because they may contain dyes that will be transferred in the cleaning process. In addition to this, household cleaning cloths can leave fibers behind that can jam delicate mechanisms.
C: Synthetic cloths may become dissolved by certain cleaning solvents, with the result being a possible coating the surface being cleaned.
D: While option B is correct, option C is not.
References:

Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 449-450.