<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .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 11075 mm Hg, pulse 95min, and temperature 38.0C 100.4F. 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,  <response>: Based on the description provided in the question stem, the most relevant findings are:- 38-year-old woman with fever and acute chest pain- Pain is sharp, stabbing, retrosternal, worse with deep breathingcoughing - Recent diagnosis of SLE systemic lupus erythematosus- Vital signs show fever, tachycardia - Physical exam reveals a pericardial friction rubThese key findings of fever, chest pain, friction rub, and a history of SLE point towards an inflammatory process involving the pericardium. The differential diagnosis includes pericarditis related to SLE flare or a concurrent infection. The onset and quality of the chest pain also fits with pericarditis. Septic shock is less likely with normal blood pressure. AMI and constrictive pericarditis do not match the acute presentation.A: Serous pericarditis 