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: Medicine
[{'content': 'A common finding in osteomalacia is \nSelect and explain. \nA. Low serum phosphate, B. Normal level of 1, 25 di-hydroxy vit D3, C. Low serum calcium, D. Increased hydroxy proline in urine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]