This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sickle Cell Disease, G6PD deficiency and other Hemolytic Anemia, Subject name: Medicine
[{'content': 'Life threatening intravascular hemolysis occur with sepsis due to which organism? \nSelect and explain. \nA. Clostridium perfringens, B. Mycoplasma pneumonia, C. Pseudomonas, D. Klebsiella', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Clostridium perfringens sepsis leads to life threatening intravascular hemolysis due to lecithinase activity. It occurs following open wounds, septic aboion, or due to a contaminated blood unit. Other infections causing hemolytic anemia: Malaria Shiga toxin-producing E. coli O157:H7', 'role': 'assistant'}]