Violation

The amount of radiation to a patient can be reduced by 1. using a high speed film. 2. using an aluminum filter. 3. increasing target-film distance. 4. using low kVpThe amount of radiation to a patient can be reduced by 1. using a high speed film. 2. using an aluminum filter. 3. increasing target-film distance. 4. using low kVp

(1) (2) (3)

(1) and (3)

(2) and (4)

(4) only

All of the above.

Please describe the matter of abuse