question: Q:A 45-year-old homeless man is brought to the emergency department. He was found unconscious at the park. The patient has a past medical history of IV drug abuse, hepatitis C, alcohol abuse, schizophrenia, and depression. He does not receive normal medical follow up or care. His temperature is 102°F (38.9°C), blood pressure is 97/68 mmHg, pulse is 120/min, respirations are 22/min, and oxygen saturation is 98% on room air. Physical exam demonstrates a diffusely distended abdomen that is dull to percussion with a notable fluid wave. The abdominal exam causes the patient to contract his extremities. Cardiac and pulmonary exam are within normal limits. The patient responds to painful stimuli and smells heavily of alcohol. Which of the following is the best next step in management?? 
  {'A': 'Cefotaxime', 'B': 'Ceftriaxone', 'C': 'CT abdomen', 'D': 'Paracentesis', 'E': 'Ultrasound'},