This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of amino acids, Subject name: Biochemistry
[{'content': 'Which amino acid has maximum tendency to bind phosphate ? \nSelect and explain. \nA. Serine, B. Alanine, C. Phenylalanine, D. Tryptophan', 'role': 'user'}, {'content': 'Answer: A \nExplanation: OH containing amino acid has maximum tendency to bind phosphate Eg.Tyrosine, Threonine and Serine.', 'role': 'assistant'}]