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: Microbiology
[{'content': 'Granuloma inguinale is caused by \nSelect and explain. \nA. H. ducreyi, B. Chlamydia trachomatis, C. Treponema pallidum, D. Calymmatobacterium', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Granuloma venereum (granuloma inguinale)\xa0→\xa0caused by Calymmatobacterium granulomatosis.\nLymphogranuloma venereum (lymphogranuloma inguinale)\xa0→\xa0 Caused by chlamydia trachomatis (serotypes L1, L2, L3).', 'role': 'assistant'}]