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 component of zinc oxide-eugenol cement gives its strength? 
Select and explain. 
A. Rosin, B. Zinc oxide, C. Zinc acetate, D. Oil of cloves
B: Zinc oxide
Answer: B: Zinc oxide 
Explanation: None