<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 36-year-old man presents with massive hematemesis. Past medical history is significant for a gastric ulcer. He has a pulse of 115min, respiratory rate of 20min, temperature of 36C 96.8F, and blood pressure of 9059 mm Hg. The patient receives a transfusion of 2 units of packed red blood cells. Around 510 minutes after the transfusion, he starts having chills, pain in the lumbar region, and oliguria. His vital signs change to pulse of 118min, respiratory rate of 19min, temperature of 38C 100.4F, and blood pressure of 6040 mm Hg. Which of the following is the most likely cause of this patients condition?? A: Acute hemolytic transfusion reaction, B: Anaphylactic transfusion reaction, C: Febrile non-hemolytic transfusion reaction, D: Transfusion-associated sepsis, E: Transfusion-related acute lung injury,  <response>: This is a patient who developed chills, back pain, oliguria, fever, and hypotension shortly after receiving a blood transfusion. The key findings here are the development of fever, chills, and hypotension soon after the transfusion. This clinical picture is most consistent with an acute hemolytic transfusion reaction. Hemolytic reactions can cause fever, chills, backflank pain, and cardiovascular collapse due to intravascular hemolysis. The other answer choices are less likely here: anaphylactic reactions cause respiratory distress along with hypotension, febrile non-hemolytic reactions cause fever without hypotension or flank pain, transfusion-associated sepsis takes longer to develop, and transfusion-related acute lung injury causes respiratory symptoms.A: Acute hemolytic transfusion reaction 