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: Dental
[{'content': 'Periodontal fibers which are most resistant to forces along the long axis are: \nSelect and explain. \nA. Apical, B. Oblique, C. Transseptal, D. Alveolar crest', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]