This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'The microarray is used to \nSelect and explain. \nA. Study multiple genes, B. Study disease, C. Study organism, D. Study blood group', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Microarray - A type of hybridization technique which utilizes multiple oligonucleotide probes to study multiple genes within a sho period of time.(Ref: Robbins 8/e p174)', 'role': 'assistant'}]