A 31-year-old female presents with complaints of severe right knee pain and swelling that began suddenly three hours ago. Vital signs are blood pressure 128/88 heart rate 110 respirations 18 and temperature 38.6 Celsius. Vesiculopustular lesions are present on distal extremities. Past medical history is significant for IV drug use and 15 year history of cigarette smoking. What would the nurse practitioner order to help confirm this diagnosis? A. Blood cultures and synovial fluid aspiration B. MRI of the knee C. Bilateral ankle x-rays D. Urine cultures