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
Infective agent causing atherosclerosis - 
Select and explain. 
A. M. pneumoniae, B. C. Pneumoniae, C. H.influenza, D. C. Diptheriae
B: C. Pneumoniae
Answer: B: C. Pneumoniae 
Explanation: Ans. is 'b' i.e., C. pneumoniaeo Seroepidemiological studies suggest an association between several microbes and coronary hea disease.o Microbes or their structural components are found in atherosclerotic plaques, but the only intact microbes commonly present are herpes viruses and Chlamydia pneumoniae.o These agents are able to initiate and accelerate atherosclerosis in animal models.o If they cause persistent infection in the vessel wall, they can directly promote a proinflammatory, procoagulant, and proatherogenic environment.