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: Pharmacology
[{'content': 'About first order kinetics true statement is: \nSelect and explain. \nA. Clearance remains constant, B. Fixed amount of the drug is eliminated, C. Half life increase with dose, D. Decreased clearance with increasing dose', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]