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': "True about Kartagener's syndrome -a)  Dextrocardiab)  Infertilityc)  Mental retardationd)  Bronchiectasis \nSelect and explain. \nA. acd, B. abd, C. abc, D. ab", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Dextrocardia occurs due to situs invertus.', 'role': 'assistant'}]