question: Q:A 3-year-old girl is brought to the physician by her mother two days after the sudden onset of a rash. The mother says that the rash developed an hour after she bathed the child in lukewarm water. Two weeks ago, the patient was diagnosed with a skin infection and was treated with penicillin V. She has been otherwise healthy but has missed several well-child examinations. She lives with her single mother, who recently lost her job and is now dependent on social assistance. The patient's mother has major depressive disorder and her maternal aunt has systemic lupus erythematosus. The girl's temperature is 36.8°C (98.2°F), pulse is 112/min, and blood pressure is 108/62 mm Hg. She has poor eye contact. Physical examination shows sharply delineated erythema on the lower extremities up to the umbilicus with sparing of the knees and flexor surfaces. Further evaluation is most likely to reveal which of the following?? 
  {'A': 'Multiple injuries in different stages of healing', 'B': 'Dermatographism', 'C': "Positive Nikolsky's sign", 'D': 'Malar rash with sparing of the nasolabial folds', 'E': 'Ulcers of the oral mucosa\n"'},