Each of the Following Statements Is True EXCEPT One

Each of the following statements is true EXCEPT one. Which one is the EXCEPTION?

A) During exposure, the x-rays strike and ionize all silver halide crystals on the film.
B) The invisible image on an x-ray film is called the "latent image."
C) The function of the gelatin in film emulsion is to keep the silver halide crystals evenly suspended over the base.
D) Silver halide in the emulsion is primarily silver bromide.