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': 'Which of the following is the most important in strength of ZOE? \nSelect and explain. \nA. Liquid powder ratio, B. Temperature of mixing stab, C. Speed of mixing, D. Addition of few drops of water', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The solubility of the set cement is highest among the cements (0.4 to 1.5 % wt). They\xa0disintegrate in oral fluids. This breakdown is due to hydrolysis of the zinc eugenolate matrix\xa0to form zinc hydroxide and eugenol. Solubility is reduced by increasing the powder/liquid\xa0(P/L) ratio.', 'role': 'assistant'}]