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': 'The alternative of Eugenol is \nSelect and explain. \nA. Orthoethoxy benzoic acid, B. Ortho phosphoric acid, C. Poly(acrylic acid), D. Citric acid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]