Why Is It Necessary to Wipe Sterile Gloves with a Sterile

Why is it necessary to wipe sterile gloves with a sterile damp towel after donning the gloves and before touching items on the sterile field?

A) To warm up one's hands before starting the procedure
B) To maintain a time-honored tradition started by the glove manufacturers
C) To decrease the amount of contaminants already present on sterile gloves
D) To remove powder sometimes present on sterile gloves