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': 'T/t used for lower ureteric stone is: \nSelect and explain. \nA. Endoscopic removal, B. Diuretics, C. Drug dissolution, D. Laser', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Endoscopic removal): Stones in the lower pa of ureter within 5-6 cm of ureteric orifice (that are small in size) are best managed by Ureteroscopic (Endoscopic) removal.', 'role': 'assistant'}]