For Proper Exposure Technique All of the Following Are Correct

Multiple Choice

For proper exposure technique all of the following are correct EXCEPT one.Which one is the EXCEPTION?.The operator should be a minimum of 6 feet away from the tube head (the source of radiation) and behind a suitable (acceptable) barrier when the exposure is made.

A) The patient may hold a drifting x-ray head during the exposure.
B) The operator should be a minimum of 6 feet away from the source of radiation.
C) The operator should be behind an acceptable barrier when the exposure is made.
D) The operator should not hold any receptor (film packet,digital sensor,or phosphor plate) in the patient's mouth.