This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diuretics and Antidiuretics, Subject name: Pharmacology
[{'content': 'The site of action of the furosemide is: \nSelect and explain. \nA. Thick ascending limb of loop of Henle, B. Descending limb of loop of Henle, C. Proximal convoluted tubule, D. Distal convoluted tubule', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (A) Thick ascending limb of loop of Henle(Ref: Goodman and Gilman 12th/678)Furosemide is a loop diuretic and this group of drugs act on thick ascending limb of loop of Henle.', 'role': 'assistant'}]