Select the Advantage Automatic Exposure Control (AEC) Has Over Other

Select the advantage automatic exposure control (AEC) has over other methods of determining x-ray exposure time.

A) Requires less exposure time than other methods to produce the same radiographic results.
B) Results in less patient dose from soft radiation.
C) Accounts for variations in patient density in determining appropriate exposure time.
D) Requires no clinical knowledge of the role of mA and kVp.
E) Demonstrates no dramatic advantage over manual methods of determining exposure time.