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': '1st urge at micturition comes at ? \nSelect and explain. \nA. 50 ml, B. 250 ml, C. 150 ml, D. 350 ml', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., 150 ml"First urge to void is felt at a bladder volume of about 150 ml, and a marked sense of fullness at about 400 ml". - Ganong', 'role': 'assistant'}]