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
Dental wax pattern should be invested as soon as possible because of danger of: 
Select and explain. 
A. Distortion due to relaxation of internal stresses, B. Drying of the wax pattern, C. Continued expansion of wax, D. Reduction in flow of wax
A: Distortion due to relaxation of internal stresses
Answer: A: Distortion due to relaxation of internal stresses 
Explanation: None