With Film-Screen Imaging Using AEC,if an AP Thoracic Spine Is

Multiple Choice

With film-screen imaging using AEC,if an AP thoracic spine is imaged with the density setting changed from 0 to +2,the density in the area of interest will be __________________ and the exposure time will be ________________________.(Assume all other factors are appropriate. )

A) darker;longer
B) darker;shorter
C) unchanged;unchanged
D) unchanged;shorter