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': 'Chlamydia trachomatis infection commonly causes - \nSelect and explain. \nA. Infeility, B. Post coital bleeding, C. Amenorhoea, D. Malignancy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., Infeility "Infeility associated with fallopian tube scarring has been strongly linked to antecedent C. trachomatis infection in serological studies."', 'role': 'assistant'}]