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
The alternative of Eugenol is 
Select and explain. 
A. Orthoethoxy benzoic acid, B. Ortho phosphoric acid, C. Poly(acrylic acid), D. Citric acid
A: Orthoethoxy benzoic acid
Answer: A: Orthoethoxy benzoic acid 
Explanation: None