Which of the Following Techniques Best Exhibits Surgical Asepsis

Which of the following techniques best exhibits surgical asepsis?

A) Suctioning the oral cavity of an unconscious client.
B) Disinfecting an item before adding it to a sterile field.
C) Touching only the inside surface of the first glove while pulling it onto the hand.
D) Allowing sterile gloved hands to fall below the waist.