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': 'Subtelomeric fraction in children with idiopathic MR can be traced by all, except? \nSelect and explain. \nA. FISH, B. Laser diode index, C. MALDI, D. Array comparative genomic hybridization', 'role': 'user'}, {'content': 'Answer: B \nExplanation: . Laser diode index', 'role': 'assistant'}]