Each of the following statements regarding the fundamentals of periapical radiographs is correct ...

C
Explanation: A) An image receptor holder with an external aiming device will assist the radiographer with directing the x-ray beam at the correct angle. Using the patient's finger to hold the image receptor in place during exposure is not acceptable.
B) An image receptor holder with an external aiming device will assist the radiographer with directing the x-ray beam at the correct angle. Using the patient's finger to hold the image receptor in place during exposure is not acceptable.
C) An image receptor holder with an external aiming device will assist the radiographer with directing the x-ray beam at the correct angle. Using the patient's finger to hold the image receptor in place during exposure is not acceptable.
D) An image receptor holder with an external aiming device will assist the radiographer with directing the x-ray beam at the correct angle. Using the patient's finger to hold the image receptor in place during exposure is not acceptable.

that's the expression on my face when I got the notification email