This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and family planning, Subject name: Social & Preventive Medicine
[{'content': 'In a community of 5000 people, the crude bih rate is 30 per 1000 people. The number of pregnant female is? \nSelect and explain. \nA. 150, B. 65, C. 175, D. 200', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Crude Bih rate: Annual number of live bihs per 1000 mid year population Here, CBR is 30 per 1000 population So for 5000 population - 30/1000 x5000 = 150 That implies, no of pregnant women is 150 Ref: Park 25th edition Pgno : 532', 'role': 'assistant'}]