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
Chlamydia trachomatis infection commonly causes - 
Select and explain. 
A. Infeility, B. Post coital bleeding, C. Amenorhoea, D. Malignancy
A: Infeility
Answer: A: Infeility 
Explanation: Ans. is 'a' i.e., Infeility "Infeility associated with fallopian tube scarring has been strongly linked to antecedent C. trachomatis infection in serological studies."