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: Biochemistry
[{'content': 'Galactosemia commonly is due to deficiency of \nSelect and explain. \nA. Galactose-1 phosphate uridyl transferase, B. Galactose-1 phosphatase, C. Glucose-1 phosphatase, D. Glucose-6 phosphatase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Galactose-1 phosphate uridyl transferase\xa0\nGalactosemia is due to deficiency of :\n\nGalactose-1-phosphate uridyl transferase (most common and best known),\nGalactokinase, and\nUDP-Galactose-4-epimerase.', 'role': 'assistant'}]