This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Organophosphates act by inhibiting the enzyme acetylcholinesterase. Which type of enzyme inhibitors are they \nSelect and explain. \nA. Competitive and reversible, B. Non competitive and Irreversible, C. Uncompetitive and reversible, D. Competitive and Irreversible', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Both organophosphates and carbamates cause competitive inhibition of acetylcholineesterase by binding to esteratic site. However organophosphates are irreversible and most carbamates(except carbaryl and propoxur) are reversible inhibitors.thus, the type of inhibition of acetylcholine esterase caused by organophosphates is competitive and Irreversible. Ref-Goodman and Gillman 12th/e p242', 'role': 'assistant'}]