This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social science, Mental health & Genetics, Subject name: Social & Preventive Medicine
[{'content': 'What is the incidence of chromosomal abnormality per 1000 live bihs - \nSelect and explain. \nA. 1.6, B. 3.6, C. 5.6, D. 7.6', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The incidence of chromosomal abnormalities is 5.6 per 1000 live bihs of these 2 per 1000 represent sex aneuploidies, 1.7 per 1000 is autosomal aneuploidies and 1.9 per 1000 is chromosomal translocations ref ;(page no;822)23rd edition of PARK&;s textbook of Preventive and Social medicinel medicine', 'role': 'assistant'}]