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: Pathology
[{'content': 'Atherosclerosis is seen with which bacteria \nSelect and explain. \nA. Staph aureus, B. Streptococcus pneumonia, C. Chlamydia pneumoniae, D. Chlamydia trachomatis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Robbins.. “Herpes virus, cytomegalovirus and Chlamydia pneumoniae have all been detected in atherosclerotic plaques but not in normal arteries, and seroepidemiologic studies find increased antibody titers to C. pneumoniae in patients with more severe atherosclerosis”.', 'role': 'assistant'}]