question: Q:A 38-year-old woman presents with fever and acute onset chest pain for the past 12 hours. She describes the pain as severe, sharp and stabbing in character, and localized to the retrosternal area. She also says the pain is worse when she breathes deeply or coughs. Past medical history is significant for recently diagnosed systemic lupus erythematosus (SLE). Her vital signs include: blood pressure 110/75 mm Hg, pulse 95/min, and temperature 38.0°C (100.4°F). Physical examination is significant for a friction rub heard best at the lower left sternal border. Which of the following is the most likely diagnosis in this patient?? 
  {'A': 'Serous pericarditis', 'B': 'Pericardial tamponade', 'C': 'Septic shock', 'D': 'Acute myocardial infarction', 'E': 'Constrictive pericarditis'},