question: Q:A 36-year-old woman comes to the emergency department because of an itchy lesion on her skin. The rash developed shortly after she took an antibiotic for a urinary tract infection. Her temperature is 37.5°C (99.3°F), pulse is 99/min, and blood pressure is 100/66 mm Hg. Physical examination shows swelling of the face and raised, erythematous plaques on her trunk and extremities. Which of the following is the most likely cause of this patient's current condition?? 
  {'A': 'Deficiency of C1 inhibitor', 'B': 'Activation of complement cascade', 'C': 'Release of a vasoactive amine', 'D': 'Secretion of cytokines by T cells', 'E': 'Deposition of immune complexes'},