A Respiratory Therapist Is Evaluating a Chest Radiograph of a Patient

A respiratory therapist is evaluating a chest radiograph of a patient taken 2 days after being admitted for significant respiratory distress and right middle lobe pneumonia. Although the therapist notices a dramatic clinical improvement in the patient, the chest X-ray appears to be more radiopaque than the one on admission. What could explain this situation?

A) The therapist is mistakenly looking at a different patient's film.
B) Incorrect exposure of the image receptor may have happened.
C) Although the patient looks better, the pneumonia is probably worse.
D) This is a normal phenomenon.