When Comparing a Portable Chest Radiograph Taken in an Intensive

When comparing a portable chest radiograph taken in an intensive care unit bed with one taken with the patient upright in the radiology department,one significant difference is that the

A) portable chest radiograph is usually clearer.
B) one in the intensive care unit is considered a posterior view.
C) portable chest radiograph magnifies some thoracic structures and decreases the sharpness of the structures.
D) departmental chest radiograph enlarges some thoracic structures.