This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'A 36-year-old male patient has a family history of dementia want Genetic testing type \nSelect and explain. \nA. Genetic carrier test, B. Pre symptomatic test, C. Post symptomatic test, D. Genetic pre symptomatic test', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) Genetic carrier test [Harrison18 -3307; Harrison17 - 2541, Harrison16 - 2399', 'role': 'assistant'}]