4. Regarding the pathology demonstrated in Figure 76, an infant's chest x-ray, all of the following are true, except



Figure 76

A) There is usually prompt clinical improvement with appropriate antibiotic therapy.
B) It is most likely bacterial in origin.
C) It is uncommon in children older than 8 years of age.
D) It is usually seen in the upper lobes.
E) There may be a lag in radiographic improvement relative to clinical improvement.