When Radiographic Images of Patients Are Created,many Exposure Variables Come

When radiographic images of patients are created,many exposure variables come into play to produce optimum image quality.Any change in the radiographic image impression should be the result of

A) each technologist using his or her customized exposure techniques.
B) the radiation output of the x-ray machine.
C) the patient's medical condition as reflected in the image characteristics.
D) the time of day the image is taken because department business affects image quality.