question: Q:A 28-year-old woman comes to the emergency department for a rash that began 3 days ago. She has low-grade fever and muscle aches. She has no history of serious illness and takes no medications. She has had 5 male sexual partners over the past year and uses condoms inconsistently. Her temperature is 38.1°C (100.6° F), pulse is 85/min, and blood pressure is 126/89 mm Hg. Examination shows a diffuse maculopapular rash that includes the palms and soles. The remainder of the examination shows no abnormalities. A venereal disease research laboratory (VDRL) test is positive. Which of the following is the next appropriate step in management?? 
  {'A': 'Treponemal culture', 'B': 'Intravenous penicillin G', 'C': 'Dark field microscopy', 'D': 'Oral doxycycline', 'E': 'Fluorescent treponemal antibody absorption test\n"'},