You are answering a USMLE-style medical question. Question: A 59-year-old man with a history of sickle cell disease presents to the emergency department for evaluation of his fever and night sweats. He is extremely lethargic and is unable to provide an adequate history to his physician. His wife noted that roughly 3 days ago, her husband mentioned that something bit him, but she cannot remember what exactly. The vital signs include blood pressure 85/67 mm Hg, pulse rate 107/min, and respiratory rate 35/min. Upon examination, the man is currently afebrile but is lethargic and pale. His spleen is surgically absent. There are some swollen bite marks on his right hand with red streaks extending to his elbow. Which of the following bites would be most concerning in this patient? Options: A) Human bite B) Spider bite C) Fish bite D) Dog bite Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.