[dr.Ira]

The mother of a 3-year-old patient of yours, calls the office after the child banged his head against the coffee table in their family room. The mother is absolutely frantic, saying that her son has been "screaming and crying" for the past 45 minutes and that she cannot calm him down. She tells you that he did not lose consciousness. You advise her to bring him into the office, even though you just finished seeing your last patient and were just planning on leaving for the evening. When they arrive, you notice that the boy's eyes appear very red from crying, but that he has calmed down. The mother is still very concerned. They have both been patients of yours for many years, and they have always been very healthy and compliant. You notice that there is a 0.5-cm edematous area on the back of his head. The skin is intact over the wound. The remainder of the physical examination, including a complete neurologic and funduscopic examination, is unremarkable. After calming the mother down, the most appropriate next step is to
A. advise them to go to the emergency department for observation
B. obtain a skull radiograph
C. order a CT scan of the head
D. recommend regular monitoring and observation for any abnormalities, and if they arise, that they should go to the emergency department
E. report the case to the child protective service agency