Question: You are seeing a 65 year old man with low back pain and constitutional symptoms (malaise, fever, and poor appetite) for several weeks. Upon further questioning, he tells you that he had a knee replacement 2 months ago. You note that he has lost 10 pounds since he was last seen at your clinic 6 months ago. He has a fever of 100.2. What is the most likely cause of his symptoms? Group of answer choices Hematogenous osteomyelitis Exogenous osteomyelitis Urinary tract infection Influenza