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
Which of the following is the most important in strength of ZOE? 
Select and explain. 
A. Liquid powder ratio, B. Temperature of mixing stab, C. Speed of mixing, D. Addition of few drops of water
A: Liquid powder ratio
Answer: A: Liquid powder ratio 
Explanation: The solubility of the set cement is highest among the cements (0.4 to 1.5 % wt). They disintegrate in oral fluids. This breakdown is due to hydrolysis of the zinc eugenolate matrix to form zinc hydroxide and eugenol. Solubility is reduced by increasing the powder/liquid (P/L) ratio.