This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Life-threatening intravascular hemolysis, due to a toxin with lecithinase activity, occurs with sepsis due to: \nSelect and explain. \nA. Pseudomonas, B. Babesia, C. Parvovirus B 19, D. Clostridium perfringens', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Life-threatening intravascular hemolysis, due to a toxin with lecithinase activity, occurs with Clostridium perfringens sepsis. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 881', 'role': 'assistant'}]