This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
[{'content': "Eyebrows don't grow beyond ceain length as they have a sho- \nSelect and explain. \nA. Anagen phase, B. Telogen phase, C. Catagen phase, D. Exogen phase", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Eyebrow hair do not have long anagen phase Ref Harrison20th edition pg 1236', 'role': 'assistant'}]