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': 'Dental wax pattern should be invested as soon as possible because of danger of: \nSelect and explain. \nA. Distortion due to relaxation of internal stresses, B. Drying of the wax pattern, C. Continued expansion of wax, D. Reduction in flow of wax', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]