The Possibility of Exposure of Radiographic Film to White Light

The possibility of exposure of radiographic film to white light can be reduced by

A) turning off the safelight and unwrapping the films in a pitch-black room.
B) pre-exposing the entire package of film to radiation before opening the package.
C) not unwrapping the film in a room with white light.
D) turning off the fluorescent lighting in the treatment room before exposing radiographic films.