This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Anatomy
[{'content': 'All the following species of Haemophillus show satellitism , except \nSelect and explain. \nA. H. influenzae, B. H.aegypticus, C. H.haemolyticus, D. H.ducreyi', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Satellitism is seen when the organism lacks factor V that is provided by S.aureus. But H.ducreyi is needs only factor X for growth. Hence it does not show satellitism.', 'role': 'assistant'}]