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: Physiology
[{'content': 'Action of parathormone on phosphate level ? \nSelect and explain. \nA. Decreases phosphate level, B. Increases phosphate level, C. No effect, D. Variable effect', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Decreases phosphate level", 'role': 'assistant'}]