In Processing a Crime Scene for Fingerprints, What Precautions Should

In processing a crime scene for fingerprints, what precautions should be taken prior to dusting for this type of trace evidence?

A) Shine a light to enhance the location of latent prints.
B) Decide which type of media you will use on the surface of the print.
C) Wear gloves so that you don't transfer your prints onto the crime scene.
D) Package the recovered print in a breathable container.
E) Use a sterile Q-tip to obtain a small portion of a patent print.